diff --git a/Frameworks/RSParser/Feeds/FeedParser.swift b/Frameworks/RSParser/Feeds/FeedParser.swift
index d4b4bbe85..083478074 100644
--- a/Frameworks/RSParser/Feeds/FeedParser.swift
+++ b/Frameworks/RSParser/Feeds/FeedParser.swift
@@ -8,7 +8,7 @@
 
 import Foundation
 
-// FeedParser knows about the various syndication feed types.
+// FeedParser handles the various syndication feed types.
 // It might be a good idea to do a plugin-style architecture here instead —
 // but feed formats don’t appear all that often, so it’s probably not necessary.
 
@@ -21,6 +21,8 @@ public struct FeedParser {
 		// Can call with partial data — while still downloading, for instance.
 		// If there’s not enough data, return .unknown. Ask again when there’s more data.
 		// If it’s definitely not a feed, return .notAFeed.
+		//
+		// This should be fast enough to call on the main thread.
 
 		if parserData.data.count < minNumberOfBytesRequired {
 			return .unknown
@@ -50,6 +52,13 @@ public struct FeedParser {
 
 	public static func parseFeed(_ parserData: ParserData) throws -> ParsedFeed? {
 
+		// All the concrete parsers return a ParsedFeed struct.
+		// Related: ParsedItem, ParsedAuthor, ParsedHub, ParsedAttachment.
+		//
+		// This is probably fast enough to call on the main thread —
+		// but it’s probably a good idea to use a background queue if
+		// you might be doing a lot of parsing. (Such as in a feed reader.)
+
 		do {
 			let type = feedType(parserData)
 
@@ -65,7 +74,7 @@ public struct FeedParser {
 				return RSSParser.parse(parserData)
 
 			case .atom:
-				return AtomParser.parser(parserData)
+				return AtomParser.parse(parserData)
 
 			case .unknown, .notAFeed:
 				return nil
diff --git a/Frameworks/RSParser/Feeds/XML/AtomParser.swift b/Frameworks/RSParser/Feeds/XML/AtomParser.swift
new file mode 100644
index 000000000..151349af7
--- /dev/null
+++ b/Frameworks/RSParser/Feeds/XML/AtomParser.swift
@@ -0,0 +1,28 @@
+//
+//  AtomParser.swift
+//  RSParser
+//
+//  Created by Brent Simmons on 6/25/17.
+//  Copyright © 2017 Ranchero Software, LLC. All rights reserved.
+//
+
+import Foundation
+
+// RSSParser wraps the Objective-C RSAtomParser.
+//
+// The Objective-C parser creates RSParsedFeed, RSParsedArticle, etc.
+// This wrapper then creates ParsedFeed, ParsedItem, etc. so that it creates
+// the same things that JSONFeedParser and RSSInJSONParser create.
+//
+// In general, you should see FeedParser.swift for all your feed-parsing needs.
+
+public struct AtomParser {
+
+	public static func parse(_ parserData: ParserData) -> ParsedFeed? {
+
+		if let rsParsedFeed = RSAtomParser.parseFeed(with: parserData) {
+			return RSParsedFeedTransformer.parsedFeed(rsParsedFeed)
+		}
+		return nil
+	}
+}
diff --git a/Frameworks/RSParser/Feeds/XML/RSAtomParser.h b/Frameworks/RSParser/Feeds/XML/RSAtomParser.h
index 854969241..27b5d80e4 100755
--- a/Frameworks/RSParser/Feeds/XML/RSAtomParser.h
+++ b/Frameworks/RSParser/Feeds/XML/RSAtomParser.h
@@ -6,8 +6,13 @@
 //  Copyright (c) 2015 Ranchero Software LLC. All rights reserved.
 //
 
-#import "FeedParser.h"
+@import Foundation;
 
-@interface RSAtomParser : NSObject <FeedParser>
+@class ParserData;
+@class RSParsedFeed;
+
+@interface RSAtomParser : NSObject
+
++ (RSParsedFeed *)parseFeedWithData:(ParserData *)parserData;
 
 @end
diff --git a/Frameworks/RSParser/Feeds/XML/RSAtomParser.m b/Frameworks/RSParser/Feeds/XML/RSAtomParser.m
index 6ba48c63d..6bd657184 100755
--- a/Frameworks/RSParser/Feeds/XML/RSAtomParser.m
+++ b/Frameworks/RSParser/Feeds/XML/RSAtomParser.m
@@ -9,12 +9,11 @@
 #import <libxml/xmlstring.h>
 #import "RSAtomParser.h"
 #import "RSSAXParser.h"
-#import "FeedParser.h"
 #import "RSParsedFeed.h"
 #import "RSParsedArticle.h"
-#import "RSXMLData.h"
-#import "NSString+RSXML.h"
+#import "NSString+RSParser.h"
 #import "RSDateParser.h"
+#import <RSParser/RSParser-Swift.h>
 
 
 @interface RSAtomParser () <RSSAXParserDelegate>
@@ -44,57 +43,24 @@
 
 #pragma mark - Class Methods
 
-+ (BOOL)canParseFeed:(RSXMLData *)xmlData {
++ (RSParsedFeed *)parseFeedWithData:(ParserData *)parserData {
 
-	// Checking for '<feed' and '<entry' within first n characters should do it.
-
-	@autoreleasepool {
-
-		NSData *feedData = xmlData.data;
-		
-		NSString *s = [[NSString alloc] initWithBytesNoCopy:(void *)feedData.bytes length:feedData.length encoding:NSUTF8StringEncoding freeWhenDone:NO];
-		if (!s) {
-			s = [[NSString alloc] initWithData:feedData encoding:NSUTF8StringEncoding];
-		}
-		if (!s) {
-			s = [[NSString alloc] initWithData:feedData encoding:NSUnicodeStringEncoding];
-		}
-		if (!s) {
-			return NO;
-		}
-
-		static const NSInteger numberOfCharactersToSearch = 4096;
-		NSRange rangeToSearch = NSMakeRange(0, numberOfCharactersToSearch);
-		if (s.length < numberOfCharactersToSearch) {
-			rangeToSearch.length = s.length;
-		}
-
-		NSRange feedRange = [s rangeOfString:@"<feed" options:NSLiteralSearch range:rangeToSearch];
-		NSRange entryRange = [s rangeOfString:@"<entry" options:NSLiteralSearch range:rangeToSearch];
-		if (feedRange.length < 1 || entryRange.length < 1) {
-			return NO;
-		}
-
-		if (feedRange.location > entryRange.location) {
-			return NO; // Wrong order.
-		}
-	}
-	
-	return YES;
+	RSAtomParser *parser = [[[self class] alloc] initWithParserData:parserData];
+	return [parser parseFeed];
 }
 
 
 #pragma mark - Init
 
-- (instancetype)initWithXMLData:(RSXMLData *)xmlData {
+- (instancetype)initWithParserData:(ParserData *)parserData {
 	
 	self = [super init];
 	if (!self) {
 		return nil;
 	}
 	
-	_feedData = xmlData.data;
-	_urlString = xmlData.urlString;
+	_feedData = parserData.data;
+	_urlString = parserData.url;
 	_parser = [[RSSAXParser alloc] initWithDelegate:self];
 	_attributesStack = [NSMutableArray new];
 	_articles = [NSMutableArray new];
@@ -105,7 +71,7 @@
 
 #pragma mark - API
 
-- (RSParsedFeed *)parseFeed:(NSError **)error {
+- (RSParsedFeed *)parseFeed {
 
 	[self parse];
 
@@ -315,7 +281,7 @@ static const NSInteger kSelfLength = 5;
 
 - (NSString *)currentStringWithHTMLEntitiesDecoded {
 	
-	return [self.parser.currentStringWithTrimmedWhitespace rs_stringByDecodingHTMLEntities];
+	return [self.parser.currentStringWithTrimmedWhitespace rsparser_stringByDecodingHTMLEntities];
 }
 
 
diff --git a/Frameworks/RSParser/Feeds/XML/RSFeedParser.h b/Frameworks/RSParser/Feeds/XML/RSFeedParser.h
deleted file mode 100755
index 1f849f266..000000000
--- a/Frameworks/RSParser/Feeds/XML/RSFeedParser.h
+++ /dev/null
@@ -1,28 +0,0 @@
-//
-//  RSFeedParser.h
-//  RSParser
-//
-//  Created by Brent Simmons on 1/4/15.
-//  Copyright (c) 2015 Ranchero Software LLC. All rights reserved.
-//
-
-#import "FeedParser.h"
-
-// If you have a feed and don’t know or care what it is (RSS or Atom),
-// then call RSParseFeed or RSParseFeedSync.
-
-@class RSXMLData;
-@class RSParsedFeed;
-
-NS_ASSUME_NONNULL_BEGIN
-
-BOOL RSCanParseFeed(RSXMLData *xmlData);
-
-
-typedef void (^RSParsedFeedBlock)(RSParsedFeed * _Nullable parsedFeed, NSError * _Nullable error);
-
-// callback is called on main queue.
-void RSParseFeed(RSXMLData *xmlData, RSParsedFeedBlock callback);
-RSParsedFeed * _Nullable RSParseFeedSync(RSXMLData *xmlData, NSError * _Nullable * _Nullable error);
-
-NS_ASSUME_NONNULL_END
diff --git a/Frameworks/RSParser/Feeds/XML/RSFeedParser.m b/Frameworks/RSParser/Feeds/XML/RSFeedParser.m
deleted file mode 100755
index 84b1de10c..000000000
--- a/Frameworks/RSParser/Feeds/XML/RSFeedParser.m
+++ /dev/null
@@ -1,216 +0,0 @@
-//
-//  FeedParser.m
-//  RSParser
-//
-//  Created by Brent Simmons on 1/4/15.
-//  Copyright (c) 2015 Ranchero Software LLC. All rights reserved.
-//
-
-#import "RSFeedParser.h"
-#import "FeedParser.h"
-#import "RSXMLData.h"
-#import "RSRSSParser.h"
-#import "RSAtomParser.h"
-
-static NSArray *parserClasses(void) {
-	
-	static NSArray *gParserClasses = nil;
-	
-	static dispatch_once_t onceToken;
-	dispatch_once(&onceToken, ^{
-		
-		gParserClasses = @[[RSRSSParser class], [RSAtomParser class]];
-	});
-	
-	return gParserClasses;
-}
-
-static BOOL feedMayBeParseable(RSXMLData *xmlData) {
-	
-	/*Sanity checks.*/
-	
-	if (!xmlData.data) {
-		return NO;
-	}
-
-	/*TODO: check size, type, etc.*/
-	
-	return YES;
-}
-
-static BOOL optimisticCanParseRSSData(const char *bytes, NSUInteger numberOfBytes);
-static BOOL optimisticCanParseAtomData(const char *bytes, NSUInteger numberOfBytes);
-static BOOL optimisticCanParseRDF(const char *bytes, NSUInteger numberOfBytes);
-static BOOL dataIsProbablyHTML(const char *bytes, NSUInteger numberOfBytes);
-static BOOL dataIsSomeWeirdException(const char *bytes, NSUInteger numberOfBytes);
-static BOOL dataHasLeftCaret(const char *bytes, NSUInteger numberOfBytes);
-
-static const NSUInteger maxNumberOfBytesToSearch = 4096;
-static const NSUInteger minNumberOfBytesToSearch = 20;
-
-static Class parserClassForXMLData(RSXMLData *xmlData) {
-	
-	if (!feedMayBeParseable(xmlData)) {
-		return nil;
-	}
-	
-	// TODO: check for things like images and movies and return nil.
-	
-	const char *bytes = xmlData.data.bytes;
-	NSUInteger numberOfBytes = xmlData.data.length;
-	
-	if (numberOfBytes > minNumberOfBytesToSearch) {
-		
-		if (numberOfBytes > maxNumberOfBytesToSearch) {
-			numberOfBytes = maxNumberOfBytesToSearch;
-		}
-
-		if (!dataHasLeftCaret(bytes, numberOfBytes)) {
-			return nil;
-		}
-
-		if (optimisticCanParseRSSData(bytes, numberOfBytes)) {
-			return [RSRSSParser class];
-		}
-		if (optimisticCanParseAtomData(bytes, numberOfBytes)) {
-			return [RSAtomParser class];
-		}
-		
-		if (optimisticCanParseRDF(bytes, numberOfBytes)) {
-			return nil; //TODO: parse RDF feeds
-		}
-		
-		if (dataIsProbablyHTML(bytes, numberOfBytes)) {
-			return nil;
-		}
-		if (dataIsSomeWeirdException(bytes, numberOfBytes)) {
-			return nil;
-		}
-	}
-	
-	for (Class parserClass in parserClasses()) {
-		if ([parserClass canParseFeed:xmlData]) {
-			return [[parserClass alloc] initWithXMLData:xmlData];
-		}
-	}
-	
-	return nil;
-}
-
-static id<FeedParser> parserForXMLData(RSXMLData *xmlData) {
-	
-	Class parserClass = parserClassForXMLData(xmlData);
-	if (!parserClass) {
-		return nil;
-	}
-	return [[parserClass alloc] initWithXMLData:xmlData];
-}
-
-static BOOL canParseXMLData(RSXMLData *xmlData) {
-	
-	return parserClassForXMLData(xmlData) != nil;
-}
-
-static BOOL didFindString(const char *string, const char *bytes, NSUInteger numberOfBytes) {
-	
-	char *foundString = strnstr(bytes, string, numberOfBytes);
-	return foundString != NULL;
-}
-
-static BOOL dataHasLeftCaret(const char *bytes, NSUInteger numberOfBytes) {
-
-	return didFindString("<", bytes, numberOfBytes);
-}
-
-static BOOL dataIsProbablyHTML(const char *bytes, NSUInteger numberOfBytes) {
-	
-	// Won’t catch every single case, which is fine.
-	
-	if (didFindString("<html", bytes, numberOfBytes)) {
-		return YES;
-	}
-	if (didFindString("<body", bytes, numberOfBytes)) {
-		return YES;
-	}
-	if (didFindString("doctype html", bytes, numberOfBytes)) {
-		return YES;
-	}
-	if (didFindString("DOCTYPE html", bytes, numberOfBytes)) {
-		return YES;
-	}
-	if (didFindString("DOCTYPE HTML", bytes, numberOfBytes)) {
-		return YES;
-	}
-	if (didFindString("<meta", bytes, numberOfBytes)) {
-		return YES;
-	}
-	if (didFindString("<HTML", bytes, numberOfBytes)) {
-		return YES;
-	}
-	
-	return NO;
-}
-
-static BOOL dataIsSomeWeirdException(const char *bytes, NSUInteger numberOfBytes) {
-
-	if (didFindString("<errors xmlns='http://schemas.google", bytes, numberOfBytes)) {
-		return YES;
-	}
-
-	return NO;
-}
-
-static BOOL optimisticCanParseRDF(const char *bytes, NSUInteger numberOfBytes) {
-	
-	return didFindString("<rdf:RDF", bytes, numberOfBytes);
-}
-
-static BOOL optimisticCanParseRSSData(const char *bytes, NSUInteger numberOfBytes) {
-	
-	if (!didFindString("<rss", bytes, numberOfBytes)) {
-		return NO;
-	}
-	return didFindString("<channel", bytes, numberOfBytes);
-}
-
-static BOOL optimisticCanParseAtomData(const char *bytes, NSUInteger numberOfBytes) {
-	
-	return didFindString("<feed", bytes, numberOfBytes);
-}
-
-static void callCallback(RSParsedFeedBlock callback, RSParsedFeed *parsedFeed, NSError *error) {
-	
-	dispatch_async(dispatch_get_main_queue(), ^{
-		
-		@autoreleasepool {
-			if (callback) {
-				callback(parsedFeed, error);
-			}
-		}
-	});
-}
-
-
-#pragma mark - API
-
-BOOL RSCanParseFeed(RSXMLData *xmlData) {
-
-	return canParseXMLData(xmlData);
-}
-
-void RSParseFeed(RSXMLData *xmlData, RSParsedFeedBlock callback) {
-
-	dispatch_async(dispatch_get_global_queue(QOS_CLASS_UTILITY, 0), ^{
-
-		NSError *error = nil;
-		RSParsedFeed *parsedFeed = RSParseFeedSync(xmlData, &error);
-		callCallback(callback, parsedFeed, error);
-	});
-}
-
-RSParsedFeed *RSParseFeedSync(RSXMLData *xmlData, NSError **error) {
-
-	id<FeedParser> parser = parserForXMLData(xmlData);
-	return [parser parseFeed:error];
-}
-
diff --git a/Frameworks/RSParser/Feeds/XML/RSParsedArticle.h b/Frameworks/RSParser/Feeds/XML/RSParsedArticle.h
index 57f724a65..bb11f4f64 100755
--- a/Frameworks/RSParser/Feeds/XML/RSParsedArticle.h
+++ b/Frameworks/RSParser/Feeds/XML/RSParsedArticle.h
@@ -1,6 +1,6 @@
 //
 //  RSParsedArticle.h
-//  RSXML
+//  RSParser
 //
 //  Created by Brent Simmons on 12/6/14.
 //  Copyright (c) 2014 Ranchero Software LLC. All rights reserved.
diff --git a/Frameworks/RSParser/Feeds/XML/RSParsedArticle.m b/Frameworks/RSParser/Feeds/XML/RSParsedArticle.m
index 964c593a9..ae3963388 100755
--- a/Frameworks/RSParser/Feeds/XML/RSParsedArticle.m
+++ b/Frameworks/RSParser/Feeds/XML/RSParsedArticle.m
@@ -1,13 +1,14 @@
 //
 //  RSParsedArticle.m
-//  RSXML
+//  RSParser
 //
 //  Created by Brent Simmons on 12/6/14.
 //  Copyright (c) 2014 Ranchero Software LLC. All rights reserved.
 //
 
 #import "RSParsedArticle.h"
-#import "RSXMLInternal.h"
+#import "RSParserInternal.h"
+#import "NSString+RSParser.h"
 
 
 @implementation RSParsedArticle
@@ -89,7 +90,7 @@
 	NSAssert(!RSParserStringIsEmpty(self.feedURL), nil);
 	[s appendString:self.feedURL];
 
-	return [s rsxml_md5HashString];
+	return [s rsparser_md5Hash];
 }
 
 - (void)calculateArticleID {
diff --git a/Frameworks/RSParser/Feeds/XML/RSParsedFeed.h b/Frameworks/RSParser/Feeds/XML/RSParsedFeed.h
index 7876f68d5..dff915d78 100755
--- a/Frameworks/RSParser/Feeds/XML/RSParsedFeed.h
+++ b/Frameworks/RSParser/Feeds/XML/RSParsedFeed.h
@@ -1,6 +1,6 @@
 //
 //  RSParsedFeed.h
-//  RSXML
+//  RSParser
 //
 //  Created by Brent Simmons on 7/12/15.
 //  Copyright © 2015 Ranchero Software, LLC. All rights reserved.
diff --git a/Frameworks/RSParser/Feeds/XML/RSParsedFeed.m b/Frameworks/RSParser/Feeds/XML/RSParsedFeed.m
index 330b7da3c..0a9be8418 100755
--- a/Frameworks/RSParser/Feeds/XML/RSParsedFeed.m
+++ b/Frameworks/RSParser/Feeds/XML/RSParsedFeed.m
@@ -1,6 +1,6 @@
 //
 //  RSParsedFeed.m
-//  RSXML
+//  RSParser
 //
 //  Created by Brent Simmons on 7/12/15.
 //  Copyright © 2015 Ranchero Software, LLC. All rights reserved.
diff --git a/Frameworks/RSParser/Feeds/XML/RSParsedFeedTransformer.swift b/Frameworks/RSParser/Feeds/XML/RSParsedFeedTransformer.swift
new file mode 100644
index 000000000..7a5d7fcef
--- /dev/null
+++ b/Frameworks/RSParser/Feeds/XML/RSParsedFeedTransformer.swift
@@ -0,0 +1,60 @@
+//
+//  RSParsedFeedTransformer.swift
+//  RSParser
+//
+//  Created by Brent Simmons on 6/25/17.
+//  Copyright © 2017 Ranchero Software, LLC. All rights reserved.
+//
+
+import Foundation
+
+// RSRSSParser and RSAtomParser were written in Objective-C quite a while ago.
+// They create an RSParsedFeed object and related Objective-C objects.
+// These functions take an RSParsedFeed and return a Swift-y ParsedFeed,
+// which is part of providing a single API for feed parsing.
+
+struct RSParsedFeedTransformer {
+
+	static func parsedFeed(_ rsParsedFeed: RSParsedFeed) -> ParsedFeed {
+
+		let items = parsedItems(rsParsedFeed.articles)
+		return ParsedFeed(type: .rss, title: rsParsedFeed.title, homePageURL: rsParsedFeed.link, feedURL: rsParsedFeed.urlString, feedDescription: nil, nextURL: nil, iconURL: nil, faviconURL: nil, authors: nil, expired: false, hubs: nil, items: items)
+	}
+}
+
+private extension RSParsedFeedTransformer {
+
+	static func parsedItems(_ parsedArticles: Set<RSParsedArticle>) -> [ParsedItem] {
+
+		// Create [ParsedItem] from set of RSParsedArticle.
+
+		var items = [ParsedItem]()
+		for oneParsedArticle in parsedArticles {
+			items += [parsedItem(oneParsedArticle)]
+		}
+		return items
+	}
+
+	static func parsedItem(_ parsedArticle: RSParsedArticle) -> ParsedItem {
+
+		let uniqueID = parsedArticle.articleID
+		let url = parsedArticle.permalink
+		let externalURL = parsedArticle.link
+		let title = parsedArticle.title
+		let contentHTML = parsedArticle.body
+		let datePublished = parsedArticle.datePublished
+		let dateModified = parsedArticle.dateModified
+		let authors = parsedAuthors(parsedArticle.author)
+
+		return ParsedItem(uniqueID: uniqueID, url: url, externalURL: externalURL, title: title, contentHTML: contentHTML, contentText: nil, summary: nil, imageURL: nil, bannerImageURL: nil, datePublished: datePublished, dateModified: dateModified, authors: authors, tags: nil, attachments: nil)
+	}
+
+	static func parsedAuthors(_ authorEmailAddress: String?) -> [ParsedAuthor]? {
+
+		guard let authorEmailAddress = authorEmailAddress else {
+			return nil
+		}
+		let author = ParsedAuthor(name: nil, url: nil, avatarURL: nil, emailAddress: authorEmailAddress)
+		return [author]
+	}
+}
diff --git a/Frameworks/RSParser/Feeds/XML/RSRSSParser.h b/Frameworks/RSParser/Feeds/XML/RSRSSParser.h
index fe81a3c84..26e97d0a2 100755
--- a/Frameworks/RSParser/Feeds/XML/RSRSSParser.h
+++ b/Frameworks/RSParser/Feeds/XML/RSRSSParser.h
@@ -6,8 +6,14 @@
 //  Copyright (c) 2015 Ranchero Software LLC. All rights reserved.
 //
 
-#import "FeedParser.h"
+@import Foundation;
+
+@class ParserData;
+@class RSParsedFeed;
+
+@interface RSRSSParser : NSObject
+
++ (RSParsedFeed *)parseFeedWithData:(ParserData *)parserData;
 
-@interface RSRSSParser : NSObject <FeedParser>
 
 @end
diff --git a/Frameworks/RSParser/Feeds/XML/RSRSSParser.m b/Frameworks/RSParser/Feeds/XML/RSRSSParser.m
index ca44bb452..2502d3eea 100755
--- a/Frameworks/RSParser/Feeds/XML/RSRSSParser.m
+++ b/Frameworks/RSParser/Feeds/XML/RSRSSParser.m
@@ -11,10 +11,10 @@
 #import "RSSAXParser.h"
 #import "RSParsedFeed.h"
 #import "RSParsedArticle.h"
-#import "RSXMLData.h"
-#import "RSXMLInternal.h"
-#import "NSString+RSXML.h"
+#import "RSParserInternal.h"
+#import "NSString+RSParser.h"
 #import "RSDateParser.h"
+#import <RSParser/RSParser-Swift.h>
 
 
 @interface RSRSSParser () <RSSAXParserDelegate>
@@ -40,57 +40,23 @@
 
 #pragma mark - Class Methods
 
-+ (BOOL)canParseFeed:(RSXMLData *)xmlData {
++ (RSParsedFeed *)parseFeedWithData:(ParserData *)parserData {
 
-	// Checking for '<rss' and '<channel>' within first n characters should do it.
-	// TODO: handle RSS 1.0
-
-	@autoreleasepool {
-
-		NSData *feedData = xmlData.data;
-		NSString *s = [[NSString alloc] initWithBytesNoCopy:(void *)feedData.bytes length:feedData.length encoding:NSUTF8StringEncoding freeWhenDone:NO];
-		if (!s) {
-			s = [[NSString alloc] initWithData:feedData encoding:NSUTF8StringEncoding];
-		}
-		if (!s) {
-			s = [[NSString alloc] initWithData:feedData encoding:NSUnicodeStringEncoding];
-		}
-		if (!s) {
-			return NO;
-		}
-
-		static const NSInteger numberOfCharactersToSearch = 4096;
-		NSRange rangeToSearch = NSMakeRange(0, numberOfCharactersToSearch);
-		if (s.length < numberOfCharactersToSearch) {
-			rangeToSearch.length = s.length;
-		}
-
-		NSRange rssRange = [s rangeOfString:@"<rss" options:NSLiteralSearch range:rangeToSearch];
-		NSRange channelRange = [s rangeOfString:@"<channel>" options:NSLiteralSearch range:rangeToSearch];
-		if (rssRange.length < 1 || channelRange.length < 1) {
-			return NO;
-		}
-
-		if (rssRange.location > channelRange.location) {
-			return NO; // Wrong order.
-		}
-	}
-	
-	return YES;
+	RSRSSParser *parser = [[[self class] alloc] initWithParserData:parserData];
+	return [parser parseFeed];
 }
 
-
 #pragma mark - Init
 
-- (instancetype)initWithXMLData:(RSXMLData *)xmlData {
+- (instancetype)initWithParserData:(ParserData *)parserData {
 	
 	self = [super init];
 	if (!self) {
 		return nil;
 	}
 	
-	_feedData = xmlData.data;
-	_urlString = xmlData.urlString;
+	_feedData = parserData.data;
+	_urlString = parserData.url;
 	_parser = [[RSSAXParser alloc] initWithDelegate:self];
 	_articles = [NSMutableArray new];
 
@@ -100,7 +66,7 @@
 
 #pragma mark - API
 
-- (RSParsedFeed *)parseFeed:(NSError **)error {
+- (RSParsedFeed *)parseFeed {
 	
 	[self parse];
 
@@ -292,7 +258,7 @@ static const NSInteger kTrueLength = 5;
 
 - (NSString *)currentStringWithHTMLEntitiesDecoded {
 
-	return [self.parser.currentStringWithTrimmedWhitespace rs_stringByDecodingHTMLEntities];
+	return [self.parser.currentStringWithTrimmedWhitespace rsparser_stringByDecodingHTMLEntities];
 }
 
 - (void)addArticleElement:(const xmlChar *)localName prefix:(const xmlChar *)prefix {
diff --git a/Frameworks/RSParser/Feeds/XML/RSSParser.swift b/Frameworks/RSParser/Feeds/XML/RSSParser.swift
new file mode 100644
index 000000000..885790e16
--- /dev/null
+++ b/Frameworks/RSParser/Feeds/XML/RSSParser.swift
@@ -0,0 +1,28 @@
+//
+//  RSSParser.swift
+//  RSParser
+//
+//  Created by Brent Simmons on 6/25/17.
+//  Copyright © 2017 Ranchero Software, LLC. All rights reserved.
+//
+
+import Foundation
+
+// RSSParser wraps the Objective-C RSRSSParser.
+//
+// The Objective-C parser creates RSParsedFeed, RSParsedArticle, etc.
+// This wrapper then creates ParsedFeed, ParsedItem, etc. so that it creates
+// the same things that JSONFeedParser and RSSInJSONParser create.
+//
+// In general, you should see FeedParser.swift for all your feed-parsing needs.
+
+public struct RSSParser {
+
+	public static func parse(_ parserData: ParserData) -> ParsedFeed? {
+
+		if let rsParsedFeed = RSRSSParser.parseFeed(with: parserData) {
+			return RSParsedFeedTransformer.parsedFeed(rsParsedFeed)
+		}
+		return nil
+	}
+}
diff --git a/Frameworks/RSParser/HTML/RSHTMLLinkParser.h b/Frameworks/RSParser/HTML/RSHTMLLinkParser.h
index b1281c555..eae931b16 100755
--- a/Frameworks/RSParser/HTML/RSHTMLLinkParser.h
+++ b/Frameworks/RSParser/HTML/RSHTMLLinkParser.h
@@ -10,12 +10,12 @@
 
 /*Returns all <a href="some_url">some_text</a> as RSHTMLLink object array.*/
 
-@class RSXMLData;
+@class ParserData;
 @class RSHTMLLink;
 
 @interface RSHTMLLinkParser : NSObject
 
-+ (NSArray <RSHTMLLink *> *)htmlLinksWithData:(RSXMLData *)xmlData;
++ (NSArray <RSHTMLLink *> *)htmlLinksWithParserData:(ParserData *)parserData;
 
 @end
 
diff --git a/Frameworks/RSParser/HTML/RSHTMLLinkParser.m b/Frameworks/RSParser/HTML/RSHTMLLinkParser.m
index 5dd591411..1000356f4 100755
--- a/Frameworks/RSParser/HTML/RSHTMLLinkParser.m
+++ b/Frameworks/RSParser/HTML/RSHTMLLinkParser.m
@@ -10,14 +10,14 @@
 #import "RSHTMLLinkParser.h"
 #import "RSSAXHTMLParser.h"
 #import "RSSAXParser.h"
-#import "RSXMLData.h"
-#import "RSXMLInternal.h"
+#import "RSParserInternal.h"
+#import <RSParser/RSParser-Swift.h>
 
 
 @interface RSHTMLLinkParser() <RSSAXHTMLParserDelegate>
 
 @property (nonatomic, readonly) NSMutableArray *links;
-@property (nonatomic, readonly) RSXMLData *xmlData;
+@property (nonatomic, readonly) ParserData *parserData;
 @property (nonatomic, readonly) NSMutableArray *dictionaries;
 @property (nonatomic, readonly) NSURL *baseURL;
 
@@ -38,19 +38,19 @@
 
 #pragma mark - Class Methods
 
-+ (NSArray *)htmlLinksWithData:(RSXMLData *)xmlData {
++ (NSArray *)HTMLMetadataWithParserData:(ParserData *)parserData {
 
-	RSHTMLLinkParser *parser = [[self alloc] initWithXMLData:xmlData];
+	RSHTMLLinkParser *parser = [[self alloc] initWithParserData:parserData];
 	return parser.links;
 }
 
 
 #pragma mark - Init
 
-- (instancetype)initWithXMLData:(RSXMLData *)xmlData {
+- (instancetype)initWithParserData:(ParserData *)parserData {
 
-	NSParameterAssert(xmlData.data);
-	NSParameterAssert(xmlData.urlString);
+	NSParameterAssert(parserData.data);
+	NSParameterAssert(parserData.url);
 
 	self = [super init];
 	if (!self) {
@@ -58,9 +58,9 @@
 	}
 
 	_links = [NSMutableArray new];
-	_xmlData = xmlData;
+	_parserData = parserData;
 	_dictionaries = [NSMutableArray new];
-	_baseURL = [NSURL URLWithString:xmlData.urlString];
+	_baseURL = [NSURL URLWithString:parserData.url];
 
 	[self parse];
 
@@ -73,7 +73,7 @@
 - (void)parse {
 
 	RSSAXHTMLParser *parser = [[RSSAXHTMLParser alloc] initWithDelegate:self];
-	[parser parseData:self.xmlData.data];
+	[parser parseData:self.parserData.data];
 	[parser finishParsing];
 }
 
@@ -127,7 +127,7 @@ static const NSInteger kAnchorLength = 2;
 	[self.links addObject:link];
 
 	NSDictionary *d = [SAXParser attributesDictionary:attributes];
-	if (!RSParser_IsEmpty(d)) {
+	if (!RSParserObjectIsEmpty(d)) {
 		[self handleLinkAttributes:d];
 	}
 
diff --git a/Frameworks/RSParser/HTML/RSHTMLMetadata.m b/Frameworks/RSParser/HTML/RSHTMLMetadata.m
index 9f5a99c19..87662d8b4 100755
--- a/Frameworks/RSParser/HTML/RSHTMLMetadata.m
+++ b/Frameworks/RSParser/HTML/RSHTMLMetadata.m
@@ -7,7 +7,7 @@
 //
 
 #import "RSHTMLMetadata.h"
-#import "RSXMLInternal.h"
+#import "RSParserInternal.h"
 
 static NSString *urlStringFromDictionary(NSDictionary *d);
 static NSString *absoluteURLStringWithRelativeURLString(NSString *relativeURLString, NSString *baseURLString);
diff --git a/Frameworks/RSParser/HTML/RSHTMLMetadataParser.h b/Frameworks/RSParser/HTML/RSHTMLMetadataParser.h
index 32616e2f9..f9361905c 100755
--- a/Frameworks/RSParser/HTML/RSHTMLMetadataParser.h
+++ b/Frameworks/RSParser/HTML/RSHTMLMetadataParser.h
@@ -10,17 +10,13 @@
 
 
 @class RSHTMLMetadata;
-@class RSXMLData;
+@class ParserData;
 
 NS_ASSUME_NONNULL_BEGIN
 
 @interface RSHTMLMetadataParser : NSObject
 
-+ (RSHTMLMetadata *)HTMLMetadataWithXMLData:(RSXMLData *)xmlData;
-
-- (instancetype)initWithXMLData:(RSXMLData *)xmlData;
-
-@property (nonatomic, readonly) RSHTMLMetadata *metadata;
++ (RSHTMLMetadata *)HTMLMetadataWithParserData:(ParserData *)parserData;
 
 
 @end
diff --git a/Frameworks/RSParser/HTML/RSHTMLMetadataParser.m b/Frameworks/RSParser/HTML/RSHTMLMetadataParser.m
index 4fa3ca3d2..ec15f8714 100755
--- a/Frameworks/RSParser/HTML/RSHTMLMetadataParser.m
+++ b/Frameworks/RSParser/HTML/RSHTMLMetadataParser.m
@@ -1,6 +1,6 @@
 //
 //  RSHTMLMetadataParser.m
-//  RSXML
+//  RSParser
 //
 //  Created by Brent Simmons on 3/6/16.
 //  Copyright © 2016 Ranchero Software, LLC. All rights reserved.
@@ -8,16 +8,15 @@
 
 #import <libxml/xmlstring.h>
 #import "RSHTMLMetadataParser.h"
-#import "RSXMLData.h"
 #import "RSHTMLMetadata.h"
 #import "RSSAXHTMLParser.h"
 #import "RSSAXParser.h"
-#import "RSXMLInternal.h"
-
+#import "RSParserInternal.h"
+#import <RSParser/RSParser-Swift.h>
 
 @interface RSHTMLMetadataParser () <RSSAXHTMLParserDelegate>
 
-@property (nonatomic, readonly) RSXMLData *xmlData;
+@property (nonatomic, readonly) ParserData *parserData;
 @property (nonatomic, readwrite) RSHTMLMetadata *metadata;
 @property (nonatomic) NSMutableArray *dictionaries;
 @property (nonatomic) BOOL didFinishParsing;
@@ -30,26 +29,26 @@
 
 #pragma mark - Class Methods
 
-+ (RSHTMLMetadata *)HTMLMetadataWithXMLData:(RSXMLData *)xmlData {
++ (RSHTMLMetadata *)HTMLMetadataWithParserData:(ParserData *)parserData {
 
-	RSHTMLMetadataParser *parser = [[self alloc] initWithXMLData:xmlData];
+	RSHTMLMetadataParser *parser = [[self alloc] initWithParserData:parserData];
 	return parser.metadata;
 }
 
 
 #pragma mark - Init
 
-- (instancetype)initWithXMLData:(RSXMLData *)xmlData {
+- (instancetype)initWithParserData:(ParserData *)parserData {
 
-	NSParameterAssert(xmlData.data);
-	NSParameterAssert(xmlData.urlString);
+	NSParameterAssert(parserData.data);
+	NSParameterAssert(parserData.url);
 
 	self = [super init];
 	if (!self) {
 		return nil;
 	}
 
-	_xmlData = xmlData;
+	_parserData = parserData;
 	_dictionaries = [NSMutableArray new];
 
 	[self parse];
@@ -63,10 +62,10 @@
 - (void)parse {
 
 	RSSAXHTMLParser *parser = [[RSSAXHTMLParser alloc] initWithDelegate:self];
-	[parser parseData:self.xmlData.data];
+	[parser parseData:self.parserData.data];
 	[parser finishParsing];
 
-	self.metadata = [[RSHTMLMetadata alloc] initWithURLString:self.xmlData.urlString dictionaries:[self.dictionaries copy]];
+	self.metadata = [[RSHTMLMetadata alloc] initWithURLString:self.parserData.url dictionaries:[self.dictionaries copy]];
 }
 
 
@@ -121,7 +120,7 @@ static const NSInteger kLinkLength = 5;
 	}
 
 	NSDictionary *d = [SAXParser attributesDictionary:attributes];
-	if (!RSParser_IsEmpty(d)) {
+	if (!RSParserObjectIsEmpty(d)) {
 		[self handleLinkAttributes:d];
 	}
 }
diff --git a/Frameworks/RSParser/HTML/RSSAXHTMLParser.m b/Frameworks/RSParser/HTML/RSSAXHTMLParser.m
index f585173e0..c059349aa 100755
--- a/Frameworks/RSParser/HTML/RSSAXHTMLParser.m
+++ b/Frameworks/RSParser/HTML/RSSAXHTMLParser.m
@@ -11,7 +11,7 @@
 #import <libxml/tree.h>
 #import <libxml/xmlstring.h>
 #import <libxml/HTMLparser.h>
-#import "RSXMLInternal.h"
+#import "RSParserInternal.h"
 
 
 @interface RSSAXHTMLParser ()
diff --git a/Frameworks/RSParser/OPML/RSOPMLAttributes.h b/Frameworks/RSParser/OPML/RSOPMLAttributes.h
index 0ffd20242..688132fe5 100755
--- a/Frameworks/RSParser/OPML/RSOPMLAttributes.h
+++ b/Frameworks/RSParser/OPML/RSOPMLAttributes.h
@@ -1,6 +1,6 @@
 //
 //  RSOPMLAttributes.h
-//  RSXML
+//  RSParser
 //
 //  Created by Brent Simmons on 2/28/16.
 //  Copyright © 2016 Ranchero Software, LLC. All rights reserved.
diff --git a/Frameworks/RSParser/OPML/RSOPMLAttributes.m b/Frameworks/RSParser/OPML/RSOPMLAttributes.m
index 3bec885f2..89b591565 100755
--- a/Frameworks/RSParser/OPML/RSOPMLAttributes.m
+++ b/Frameworks/RSParser/OPML/RSOPMLAttributes.m
@@ -1,13 +1,13 @@
 //
 //  RSOPMLAttributes.m
-//  RSXML
+//  RSParser
 //
 //  Created by Brent Simmons on 2/28/16.
 //  Copyright © 2016 Ranchero Software, LLC. All rights reserved.
 //
 
 #import "RSOPMLAttributes.h"
-#import "RSXMLInternal.h"
+#import "RSParserInternal.h"
 
 
 NSString *OPMLTextKey = @"text";
diff --git a/Frameworks/RSParser/OPML/RSOPMLDocument.h b/Frameworks/RSParser/OPML/RSOPMLDocument.h
index bd33f1666..8b08f5e3b 100755
--- a/Frameworks/RSParser/OPML/RSOPMLDocument.h
+++ b/Frameworks/RSParser/OPML/RSOPMLDocument.h
@@ -1,6 +1,6 @@
 //
 //  RSOPMLDocument.h
-//  RSXML
+//  RSParser
 //
 //  Created by Brent Simmons on 2/28/16.
 //  Copyright © 2016 Ranchero Software, LLC. All rights reserved.
diff --git a/Frameworks/RSParser/OPML/RSOPMLDocument.m b/Frameworks/RSParser/OPML/RSOPMLDocument.m
index ec22cd74d..0674bb862 100755
--- a/Frameworks/RSParser/OPML/RSOPMLDocument.m
+++ b/Frameworks/RSParser/OPML/RSOPMLDocument.m
@@ -1,6 +1,6 @@
 //
 //  RSOPMLDocument.m
-//  RSXML
+//  RSParser
 //
 //  Created by Brent Simmons on 2/28/16.
 //  Copyright © 2016 Ranchero Software, LLC. All rights reserved.
diff --git a/Frameworks/RSParser/OPML/RSOPMLError.h b/Frameworks/RSParser/OPML/RSOPMLError.h
new file mode 100755
index 000000000..276c62ed7
--- /dev/null
+++ b/Frameworks/RSParser/OPML/RSOPMLError.h
@@ -0,0 +1,19 @@
+//
+//  RSOPMLError.h
+//  RSParser
+//
+//  Created by Brent Simmons on 2/28/16.
+//  Copyright © 2016 Ranchero Software, LLC. All rights reserved.
+//
+
+@import Foundation;
+
+extern NSString *RSOPMLErrorDomain;
+
+
+typedef NS_ENUM(NSInteger, RSOPMLErrorCode) {
+	RSOPMLErrorCodeDataIsWrongFormat = 1024
+};
+
+
+NSError *RSOPMLWrongFormatError(NSString *fileName);
diff --git a/Frameworks/RSParser/OPML/RSOPMLError.m b/Frameworks/RSParser/OPML/RSOPMLError.m
new file mode 100755
index 000000000..7aa3c5e9d
--- /dev/null
+++ b/Frameworks/RSParser/OPML/RSOPMLError.m
@@ -0,0 +1,22 @@
+//
+//  RSOPMLError.m
+//  RSParser
+//
+//  Created by Brent Simmons on 2/28/16.
+//  Copyright © 2016 Ranchero Software, LLC. All rights reserved.
+//
+
+#import "RSOPMLError.h"
+
+NSString *RSOPMLErrorDomain = @"com.ranchero.OPML";
+
+NSError *RSOPMLWrongFormatError(NSString *fileName) {
+
+	NSString *localizedDescriptionFormatString = NSLocalizedString(@"The file ‘%@’ can’t be parsed because it’s not an OPML file.", @"OPML wrong format");
+	NSString *localizedDescription = [NSString stringWithFormat:localizedDescriptionFormatString, fileName];
+
+	NSString *localizedFailureString = NSLocalizedString(@"The file is not an OPML file.", @"OPML wrong format");
+	NSDictionary *userInfo = @{NSLocalizedDescriptionKey: localizedDescription, NSLocalizedFailureReasonErrorKey: localizedFailureString};
+
+	return [[NSError alloc] initWithDomain:RSOPMLErrorDomain code:RSOPMLErrorCodeDataIsWrongFormat userInfo:userInfo];
+}
diff --git a/Frameworks/RSParser/OPML/RSOPMLFeedSpecifier.h b/Frameworks/RSParser/OPML/RSOPMLFeedSpecifier.h
index 785c4cab3..67e48572c 100755
--- a/Frameworks/RSParser/OPML/RSOPMLFeedSpecifier.h
+++ b/Frameworks/RSParser/OPML/RSOPMLFeedSpecifier.h
@@ -1,6 +1,6 @@
 //
 //  RSOPMLFeedSpecifier.h
-//  RSXML
+//  RSParser
 //
 //  Created by Brent Simmons on 2/28/16.
 //  Copyright © 2016 Ranchero Software, LLC. All rights reserved.
diff --git a/Frameworks/RSParser/OPML/RSOPMLFeedSpecifier.m b/Frameworks/RSParser/OPML/RSOPMLFeedSpecifier.m
index 784e8306f..a48d7526c 100755
--- a/Frameworks/RSParser/OPML/RSOPMLFeedSpecifier.m
+++ b/Frameworks/RSParser/OPML/RSOPMLFeedSpecifier.m
@@ -1,13 +1,13 @@
 //
 //  RSOPMLFeedSpecifier.m
-//  RSXML
+//  RSParser
 //
 //  Created by Brent Simmons on 2/28/16.
 //  Copyright © 2016 Ranchero Software, LLC. All rights reserved.
 //
 
 #import "RSOPMLFeedSpecifier.h"
-#import "RSXMLInternal.h"
+#import "RSParserInternal.h"
 
 
 @implementation RSOPMLFeedSpecifier
diff --git a/Frameworks/RSParser/OPML/RSOPMLItem.h b/Frameworks/RSParser/OPML/RSOPMLItem.h
index 853cf9bc4..e77ff008c 100755
--- a/Frameworks/RSParser/OPML/RSOPMLItem.h
+++ b/Frameworks/RSParser/OPML/RSOPMLItem.h
@@ -1,6 +1,6 @@
 //
 //  RSOPMLItem.h
-//  RSXML
+//  RSParser
 //
 //  Created by Brent Simmons on 2/28/16.
 //  Copyright © 2016 Ranchero Software, LLC. All rights reserved.
diff --git a/Frameworks/RSParser/OPML/RSOPMLItem.m b/Frameworks/RSParser/OPML/RSOPMLItem.m
index 39c7091da..58ce34338 100755
--- a/Frameworks/RSParser/OPML/RSOPMLItem.m
+++ b/Frameworks/RSParser/OPML/RSOPMLItem.m
@@ -1,6 +1,6 @@
 //
 //  RSOPMLItem.m
-//  RSXML
+//  RSParser
 //
 //  Created by Brent Simmons on 2/28/16.
 //  Copyright © 2016 Ranchero Software, LLC. All rights reserved.
@@ -9,7 +9,7 @@
 #import "RSOPMLItem.h"
 #import "RSOPMLAttributes.h"
 #import "RSOPMLFeedSpecifier.h"
-#import "RSXMLInternal.h"
+#import "RSParserInternal.h"
 
 
 @interface RSOPMLItem ()
diff --git a/Frameworks/RSParser/OPML/RSOPMLParser.h b/Frameworks/RSParser/OPML/RSOPMLParser.h
index 825b9ac93..9f703be71 100755
--- a/Frameworks/RSParser/OPML/RSOPMLParser.h
+++ b/Frameworks/RSParser/OPML/RSOPMLParser.h
@@ -1,6 +1,6 @@
 //
 //  RSOPMLParser.h
-//  RSXML
+//  RSParser
 //
 //  Created by Brent Simmons on 7/12/15.
 //  Copyright © 2015 Ranchero Software, LLC. All rights reserved.
@@ -9,21 +9,12 @@
 @import Foundation;
 
 
-@class RSXMLData;
+@class ParserData;
 @class RSOPMLDocument;
 
-
-typedef void (^RSParsedOPMLBlock)(RSOPMLDocument *OPMLDocument, NSError *error);
-
-void RSParseOPML(RSXMLData *xmlData, RSParsedOPMLBlock callback); //async; calls back on main thread.
-
-
 @interface RSOPMLParser: NSObject
 
-- (instancetype)initWithXMLData:(RSXMLData *)xmlData;
-
-@property (nonatomic, readonly) RSOPMLDocument *OPMLDocument;
-@property (nonatomic, readonly) NSError *error;
++ (RSOPMLDocument *)parseOPMLWithParserData:(ParserData *)parserData error:(NSError **)error;
 
 @end
 
diff --git a/Frameworks/RSParser/OPML/RSOPMLParser.m b/Frameworks/RSParser/OPML/RSOPMLParser.m
index 842f30a46..da10f4fb6 100755
--- a/Frameworks/RSParser/OPML/RSOPMLParser.m
+++ b/Frameworks/RSParser/OPML/RSOPMLParser.m
@@ -1,6 +1,6 @@
 //
 //  RSOPMLParser.m
-//  RSXML
+//  RSParser
 //
 //  Created by Brent Simmons on 7/12/15.
 //  Copyright © 2015 Ranchero Software, LLC. All rights reserved.
@@ -8,24 +8,24 @@
 
 #import "RSOPMLParser.h"
 #import <libxml/xmlstring.h>
-#import "RSXMLData.h"
 #import "RSSAXParser.h"
 #import "RSOPMLItem.h"
 #import "RSOPMLDocument.h"
 #import "RSOPMLAttributes.h"
-#import "RSXMLError.h"
+#import <RSParser/RSParser-Swift.h>
+#import "RSOPMLError.h"
 
 
-void RSParseOPML(RSXMLData *xmlData, RSParsedOPMLBlock callback) {
+void RSParseOPML(ParserData *parserData, RSParsedOPMLBlock callback) {
 
-	NSCParameterAssert(xmlData);
+	NSCParameterAssert(parserData);
 	NSCParameterAssert(callback);
 
 	dispatch_async(dispatch_get_global_queue(QOS_CLASS_DEFAULT, 0), ^{
 
 		@autoreleasepool {
 
-			RSOPMLParser *parser = [[RSOPMLParser alloc] initWithXMLData:xmlData];
+			RSOPMLParser *parser = [[RSOPMLParser alloc] initWithParserData:parserData];
 
 			RSOPMLDocument *document = parser.OPMLDocument;
 			NSError *error = parser.error;
@@ -50,17 +50,30 @@ void RSParseOPML(RSXMLData *xmlData, RSParsedOPMLBlock callback) {
 
 @implementation RSOPMLParser
 
+#pragma mark - Class Methods
+
++ (RSOPMLDocument *)parseOPMLWithParserData:(ParserData *)parserData error:(NSError **)error {
+
+	RSOPMLParser *parser = [[RSOPMLParser alloc] initWithParserData:parserData];
+
+	RSOPMLDocument *document = parser.OPMLDocument;
+	if (parser.error) {
+		*error = parser.error;
+		return nil;
+	}
+	return document;
+}
 
 #pragma mark - Init
 
-- (instancetype)initWithXMLData:(RSXMLData *)XMLData {
+- (instancetype)initWithParserData:(ParserData *)parserData {
 
 	self = [super init];
 	if (!self) {
 		return nil;
 	}
 
-	[self parse:XMLData];
+	[self parse:parserData];
 
 	return self;
 }
@@ -68,22 +81,22 @@ void RSParseOPML(RSXMLData *xmlData, RSParsedOPMLBlock callback) {
 
 #pragma mark - Private
 
-- (void)parse:(RSXMLData *)XMLData {
+- (void)parse:(ParserData *)parserData {
 
 	@autoreleasepool {
 
-		if (![self canParseData:XMLData.data]) {
+		if (![self canParseData:parserData.data]) {
 
 			NSString *filename = nil;
-			NSURL *url = [NSURL URLWithString:XMLData.urlString];
+			NSURL *url = [NSURL URLWithString:parserData.url];
 			if (url && url.isFileURL) {
 				filename = url.path.lastPathComponent;
 			}
-			if ([XMLData.urlString hasPrefix:@"http"]) {
-				filename = XMLData.urlString;
+			if ([parserData.url hasPrefix:@"http"]) {
+				filename = parserData.url;
 			}
 			if (!filename) {
-				filename = XMLData.urlString;
+				filename = parserData.url;
 			}
 			self.error = RSOPMLWrongFormatError(filename);
 			return;
@@ -95,7 +108,7 @@ void RSParseOPML(RSXMLData *xmlData, RSParsedOPMLBlock callback) {
 		self.OPMLDocument = [RSOPMLDocument new];
 		[self pushItem:self.OPMLDocument];
 
-		[parser parseData:XMLData.data];
+		[parser parseData:parserData.data];
 		[parser finishParsing];
 	}
 }
diff --git a/Frameworks/RSParser/ParserData.swift b/Frameworks/RSParser/ParserData.swift
index 20e24dc0d..5cc1b1ae2 100644
--- a/Frameworks/RSParser/ParserData.swift
+++ b/Frameworks/RSParser/ParserData.swift
@@ -8,14 +8,15 @@
 
 import Foundation
 
-public final class ParserData {
+@objc public final class ParserData: NSObject {
 
-	let url: String
-	let data: Data
+	public let url: String
+	public let data: Data
 
 	public init(url: String, data: Data) {
 
 		self.url = url
 		self.data = data
+		super.init()
 	}
 }
diff --git a/Frameworks/RSParser/README.md b/Frameworks/RSParser/README.md
new file mode 100644
index 000000000..7a530aa12
--- /dev/null
+++ b/Frameworks/RSParser/README.md
@@ -0,0 +1,67 @@
+# RSParser
+
+(Note: I haven’t written tests yet. It’s possible that none of this works.)
+
+(Also note: this framework is intended to supersede my [RSXML](https://github.com/brentsimmons/RSXML) framework. Use this one instead. Well, once it’s working, that is.)
+
+## What’s inside
+
+This framework includes parsers for:
+
+* [RSS](http://cyber.harvard.edu/rss/rss.html), [Atom](https://tools.ietf.org/html/rfc4287), [JSON Feed](https://jsonfeed.org/), and [RSS-in-JSON](https://github.com/scripting/Scripting-News/blob/master/rss-in-json/README.md)
+* [OPML](http://dev.opml.org/)
+* Internet dates
+* HTML metadata and links
+* HTML entities
+
+It also includes Objective-C wrappers for libXML2’s XML SAX and HTML SAX parsers. You can write your own parsers on top of these.
+
+This framework builds for macOS. It *could* be made to build for iOS also, but I haven’t gotten around to it yet.
+
+## How to parse feeds
+
+To get the type of a feed, even with partial data, call `FeedParser.feedType(parserData)`, which will return a `FeedType`.
+
+To parse a feed, call `FeedParser.parseFeed(parserData)`, which will return a `ParsedFeed`. Also see related structs: `ParsedAuthor`, `ParsedItem`, `ParsedAttachment`, and `ParsedHub`.
+
+You do *not* need to know the type of feed when calling `FeedParser.parseFeed` — it will figure it out and use the correct concrete parser.
+
+However, if you do want to use a concrete parser directly, see `RSSInJSONParser`, `JSONFeedParser`, `RSSParser`, and `AtomParser`.
+
+(Note: if you want to write a feed reader app, please do! You have my blessing and encouragement. Let me know when it’s shipping so I can check it out.)
+
+## How to parse OPML
+
+Call `+[RSOPMLParser parseOPMLWithParserData:error:]`, which returns an `RSOPMLDocument`. See related objects: `RSOPMLItem`, `RSOPMLAttributes`, `RSOPMLFeedSpecifier`, and `RSOPMLError`.
+
+## How to parse dates
+
+Call `RSDateWithString` or `RSDateWithBytes` (see `RSDateParser`). These handle the common internet date formats. You don’t need to know which format.
+
+## How to parse HTML
+
+To get an array of `<a href=…` links from from an HTML document, call `+[RSHTMLLinkParser htmlLinksWithParserData:]`. It returns an array of `RSHTMLLink`.
+
+To parse the metadata in an HTML document, call `+[RSHTMLMetadataParser HTMLMetadataWithParserData:]`. It returns an `RSHTMLMetadata` object.
+
+To write your own HTML parser, see `RSSAXHTMLParser`. The two parsers above can serve as examples.
+
+## How to parse HTML entities
+
+When you have a string with things like `&#8212;` and `&euml;` and you want to turn those into the correct characters, call `-[NSString rsparser_stringByDecodingHTMLEntities]`. (See `NSString+RSParser.h`.)
+
+## How to parse XML
+
+If you need to parse some XML that isn’t RSS, Atom, or OPML, you can use `RSSAXParser`. Don’t subclass it — instead, create an `RSSAXParserDelegate`. See `RSRSSParser`, `RSAtomParser`, and `RSOPMLParser` as examples.
+
+### Why use libXML2’s SAX API?
+
+SAX is kind of a pain because of all the state you have to manage.
+
+An alternative is to use `NSXMLParser`, which is event-driven like SAX. However, `RSSAXParser` was written to avoid allocating Objective-C objects except when absolutely needed. You’ll note use of things like `memcp` and `strncmp`.
+
+Normally I avoid this kind of thing *strenuously*. I prefer to work at the highest level possible.
+
+But my more-than-a-decade of experience parsing XML has led me to this solution, which — last time I checked, which was, admittedly, a few years ago — was not only fastest but also uses the least memory. (The two things are related, of course: creating objects is bad for performance, so this code attempts to do the minimum possible.)
+
+All that low-level stuff is encapsulated, however. If you just want to parse one of the popular feed formats, see `FeedParser`, which makes it easy and Swift-y.
diff --git a/Frameworks/RSParser/RSParser.h b/Frameworks/RSParser/RSParser.h
index f1f2ee1d4..28c853fff 100644
--- a/Frameworks/RSParser/RSParser.h
+++ b/Frameworks/RSParser/RSParser.h
@@ -8,36 +8,42 @@
 
 @import Foundation;
 
-#import <RSParser/NSData+RSParser.h>
+// To parse RSS, Atom, JSON Feed, and RSS-in-JSON the easy way, see FeedParser.swift.
+
+// Dates
+
 #import <RSParser/RSDateParser.h>
+
+// OPML
+
+#import <RSParser/RSOPMLParser.h>
+#import <RSParser/RSOPMLDocument.h>
+#import <RSParser/RSOPMLItem.h>
+#import <RSParser/RSOPMLAttributes.h>
+#import <RSParser/RSOPMLFeedSpecifier.h>
+#import <RSParser/RSOPMLError.h>
+
+// For writing your own XML parser.
+
+#import <RSParser/RSSAXParser.h>
+
+// You should use FeedParser (Swift) instead of these two specific parsers
+// and the objects they create.
+// But they’re available if you want them.
+
+#import <RSParser/RSRSSParser.h>
+#import <RSParser/RSAtomParser.h>
+#import <RSParser/RSParsedFeed.h>
+#import <RSParser/RSParsedArticle.h>
+
+// HTML
+
+#import <RSParser/RSHTMLMetadataParser.h>
+#import <RSParser/RSHTMLMetadata.h>
+#import <RSParser/RSHTMLLinkParser.h>
+#import <RSParser/RSSAXHTMLParser.h> // For writing your own HTML parser.
+
+// Utilities
+
+#import <RSParser/NSData+RSParser.h>
 #import <RSParser/NSString+RSParser.h>
-
-//#import <RSXML/RSSAXParser.h>
-//#import <RSXML/RSXMLData.h>
-//
-//#import <RSXML/RSFeedParser.h>
-//#import <RSXML/FeedParser.h>
-//#import <RSXML/RSAtomParser.h>
-//#import <RSXML/RSRSSParser.h>
-//#import <RSXML/RSParsedFeed.h>
-//#import <RSXML/RSParsedArticle.h>
-//
-//#import <RSXML/RSOPMLParser.h>
-//#import <RSXML/RSOPMLDocument.h>
-//#import <RSXML/RSOPMLItem.h>
-//#import <RSXML/RSOPMLAttributes.h>
-//#import <RSXML/RSOPMLFeedSpecifier.h>
-//
-//#import <RSXML/RSXMLError.h>
-//
-//#import <RSXML/NSString+RSXML.h>
-//#import <RSXML/RSDateParser.h>
-//
-//// HTML
-//
-//#import <RSXML/RSSAXHTMLParser.h>
-//
-//#import <RSXML/RSHTMLMetadataParser.h>
-//#import <RSXML/RSHTMLMetadata.h>
-//#import <RSXML/RSHTMLLinkParser.h>
-
diff --git a/Frameworks/RSParser/RSParser.xcodeproj/project.pbxproj b/Frameworks/RSParser/RSParser.xcodeproj/project.pbxproj
index e185a4351..cf6e463e7 100644
--- a/Frameworks/RSParser/RSParser.xcodeproj/project.pbxproj
+++ b/Frameworks/RSParser/RSParser.xcodeproj/project.pbxproj
@@ -7,26 +7,32 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		84285AA81F005D53002E8708 /* RSSParser.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84285AA71F005D53002E8708 /* RSSParser.swift */; };
+		84285AAA1F006456002E8708 /* RSParsedFeedTransformer.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84285AA91F006456002E8708 /* RSParsedFeedTransformer.swift */; };
+		84285AAC1F006754002E8708 /* AtomParser.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84285AAB1F006754002E8708 /* AtomParser.swift */; };
+		84285AAF1F006BC0002E8708 /* libxml2.2.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = 84285AAE1F006BC0002E8708 /* libxml2.2.tbd */; };
+		84285AB21F00702E002E8708 /* RSOPMLError.h in Headers */ = {isa = PBXBuildFile; fileRef = 84285AB01F00702E002E8708 /* RSOPMLError.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		84285AB31F00702E002E8708 /* RSOPMLError.m in Sources */ = {isa = PBXBuildFile; fileRef = 84285AB11F00702E002E8708 /* RSOPMLError.m */; };
 		84469CE21EFA2F3E004A6B28 /* ParserData.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84469CE11EFA2F3E004A6B28 /* ParserData.swift */; };
-		84469CEF1EFA3000004A6B28 /* RSOPMLAttributes.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469CE51EFA3000004A6B28 /* RSOPMLAttributes.h */; };
+		84469CEF1EFA3000004A6B28 /* RSOPMLAttributes.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469CE51EFA3000004A6B28 /* RSOPMLAttributes.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		84469CF01EFA3000004A6B28 /* RSOPMLAttributes.m in Sources */ = {isa = PBXBuildFile; fileRef = 84469CE61EFA3000004A6B28 /* RSOPMLAttributes.m */; };
-		84469CF11EFA3000004A6B28 /* RSOPMLDocument.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469CE71EFA3000004A6B28 /* RSOPMLDocument.h */; };
+		84469CF11EFA3000004A6B28 /* RSOPMLDocument.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469CE71EFA3000004A6B28 /* RSOPMLDocument.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		84469CF21EFA3000004A6B28 /* RSOPMLDocument.m in Sources */ = {isa = PBXBuildFile; fileRef = 84469CE81EFA3000004A6B28 /* RSOPMLDocument.m */; };
-		84469CF31EFA3000004A6B28 /* RSOPMLFeedSpecifier.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469CE91EFA3000004A6B28 /* RSOPMLFeedSpecifier.h */; };
+		84469CF31EFA3000004A6B28 /* RSOPMLFeedSpecifier.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469CE91EFA3000004A6B28 /* RSOPMLFeedSpecifier.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		84469CF41EFA3000004A6B28 /* RSOPMLFeedSpecifier.m in Sources */ = {isa = PBXBuildFile; fileRef = 84469CEA1EFA3000004A6B28 /* RSOPMLFeedSpecifier.m */; };
-		84469CF51EFA3000004A6B28 /* RSOPMLItem.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469CEB1EFA3000004A6B28 /* RSOPMLItem.h */; };
+		84469CF51EFA3000004A6B28 /* RSOPMLItem.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469CEB1EFA3000004A6B28 /* RSOPMLItem.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		84469CF61EFA3000004A6B28 /* RSOPMLItem.m in Sources */ = {isa = PBXBuildFile; fileRef = 84469CEC1EFA3000004A6B28 /* RSOPMLItem.m */; };
-		84469CF71EFA3000004A6B28 /* RSOPMLParser.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469CED1EFA3000004A6B28 /* RSOPMLParser.h */; };
+		84469CF71EFA3000004A6B28 /* RSOPMLParser.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469CED1EFA3000004A6B28 /* RSOPMLParser.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		84469CF81EFA3000004A6B28 /* RSOPMLParser.m in Sources */ = {isa = PBXBuildFile; fileRef = 84469CEE1EFA3000004A6B28 /* RSOPMLParser.m */; };
-		84469CFC1EFA3069004A6B28 /* RSSAXParser.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469CFA1EFA3069004A6B28 /* RSSAXParser.h */; };
+		84469CFC1EFA3069004A6B28 /* RSSAXParser.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469CFA1EFA3069004A6B28 /* RSSAXParser.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		84469CFD1EFA3069004A6B28 /* RSSAXParser.m in Sources */ = {isa = PBXBuildFile; fileRef = 84469CFB1EFA3069004A6B28 /* RSSAXParser.m */; };
-		84469D071EFA307E004A6B28 /* RSHTMLLinkParser.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469CFF1EFA307E004A6B28 /* RSHTMLLinkParser.h */; };
+		84469D071EFA307E004A6B28 /* RSHTMLLinkParser.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469CFF1EFA307E004A6B28 /* RSHTMLLinkParser.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		84469D081EFA307E004A6B28 /* RSHTMLLinkParser.m in Sources */ = {isa = PBXBuildFile; fileRef = 84469D001EFA307E004A6B28 /* RSHTMLLinkParser.m */; };
-		84469D091EFA307E004A6B28 /* RSHTMLMetadata.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469D011EFA307E004A6B28 /* RSHTMLMetadata.h */; };
+		84469D091EFA307E004A6B28 /* RSHTMLMetadata.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469D011EFA307E004A6B28 /* RSHTMLMetadata.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		84469D0A1EFA307E004A6B28 /* RSHTMLMetadata.m in Sources */ = {isa = PBXBuildFile; fileRef = 84469D021EFA307E004A6B28 /* RSHTMLMetadata.m */; };
-		84469D0B1EFA307E004A6B28 /* RSHTMLMetadataParser.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469D031EFA307E004A6B28 /* RSHTMLMetadataParser.h */; };
+		84469D0B1EFA307E004A6B28 /* RSHTMLMetadataParser.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469D031EFA307E004A6B28 /* RSHTMLMetadataParser.h */; settings = {ATTRIBUTES = (Public, ); }; };
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-		84469D0D1EFA307E004A6B28 /* RSSAXHTMLParser.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469D051EFA307E004A6B28 /* RSSAXHTMLParser.h */; };
+		84469D0D1EFA307E004A6B28 /* RSSAXHTMLParser.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469D051EFA307E004A6B28 /* RSSAXHTMLParser.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		84469D0E1EFA307E004A6B28 /* RSSAXHTMLParser.m in Sources */ = {isa = PBXBuildFile; fileRef = 84469D061EFA307E004A6B28 /* RSSAXHTMLParser.m */; };
 		84469D161EFA30A2004A6B28 /* NSString+RSParser.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469D101EFA30A2004A6B28 /* NSString+RSParser.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		84469D171EFA30A2004A6B28 /* NSString+RSParser.m in Sources */ = {isa = PBXBuildFile; fileRef = 84469D111EFA30A2004A6B28 /* NSString+RSParser.m */; };
@@ -34,15 +40,13 @@
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 		84469D1B1EFA30A2004A6B28 /* RSParserInternal.m in Sources */ = {isa = PBXBuildFile; fileRef = 84469D151EFA30A2004A6B28 /* RSParserInternal.m */; };
-		84469D271EFA3134004A6B28 /* RSAtomParser.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469D1D1EFA3134004A6B28 /* RSAtomParser.h */; };
+		84469D271EFA3134004A6B28 /* RSAtomParser.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469D1D1EFA3134004A6B28 /* RSAtomParser.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		84469D281EFA3134004A6B28 /* RSAtomParser.m in Sources */ = {isa = PBXBuildFile; fileRef = 84469D1E1EFA3134004A6B28 /* RSAtomParser.m */; };
-		84469D291EFA3134004A6B28 /* RSFeedParser.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469D1F1EFA3134004A6B28 /* RSFeedParser.h */; };
-		84469D2A1EFA3134004A6B28 /* RSFeedParser.m in Sources */ = {isa = PBXBuildFile; fileRef = 84469D201EFA3134004A6B28 /* RSFeedParser.m */; };
-		84469D2B1EFA3134004A6B28 /* RSParsedArticle.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469D211EFA3134004A6B28 /* RSParsedArticle.h */; };
+		84469D2B1EFA3134004A6B28 /* RSParsedArticle.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469D211EFA3134004A6B28 /* RSParsedArticle.h */; settings = {ATTRIBUTES = (Public, ); }; };
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+		84469D2D1EFA3134004A6B28 /* RSParsedFeed.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469D231EFA3134004A6B28 /* RSParsedFeed.h */; settings = {ATTRIBUTES = (Public, ); }; };
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-		84469D2F1EFA3134004A6B28 /* RSRSSParser.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469D251EFA3134004A6B28 /* RSRSSParser.h */; };
+		84469D2F1EFA3134004A6B28 /* RSRSSParser.h in Headers */ = {isa = PBXBuildFile; fileRef = 84469D251EFA3134004A6B28 /* RSRSSParser.h */; settings = {ATTRIBUTES = (Public, ); }; };
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@@ -73,6 +77,13 @@
 /* End PBXContainerItemProxy section */
 
 /* Begin PBXFileReference section */
+		84285AA71F005D53002E8708 /* RSSParser.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = RSSParser.swift; sourceTree = "<group>"; };
+		84285AA91F006456002E8708 /* RSParsedFeedTransformer.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = RSParsedFeedTransformer.swift; sourceTree = "<group>"; };
+		84285AAB1F006754002E8708 /* AtomParser.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AtomParser.swift; sourceTree = "<group>"; };
+		84285AAE1F006BC0002E8708 /* libxml2.2.tbd */ = {isa = PBXFileReference; lastKnownFileType = "sourcecode.text-based-dylib-definition"; name = libxml2.2.tbd; path = usr/lib/libxml2.2.tbd; sourceTree = SDKROOT; };
+		84285AB01F00702E002E8708 /* RSOPMLError.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RSOPMLError.h; sourceTree = "<group>"; };
+		84285AB11F00702E002E8708 /* RSOPMLError.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RSOPMLError.m; sourceTree = "<group>"; };
+		84285AB41F007255002E8708 /* README.md */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = net.daringfireball.markdown; path = README.md; sourceTree = "<group>"; };
 		84469CE11EFA2F3E004A6B28 /* ParserData.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ParserData.swift; sourceTree = "<group>"; };
 		84469CE51EFA3000004A6B28 /* RSOPMLAttributes.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RSOPMLAttributes.h; sourceTree = "<group>"; };
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@@ -102,8 +113,6 @@
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-		84469D1F1EFA3134004A6B28 /* RSFeedParser.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RSFeedParser.h; sourceTree = "<group>"; };
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@@ -136,6 +145,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				84285AAF1F006BC0002E8708 /* libxml2.2.tbd in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -159,6 +169,14 @@
 			name = Dates;
 			sourceTree = "<group>";
 		};
+		84285AAD1F006BC0002E8708 /* Frameworks */ = {
+			isa = PBXGroup;
+			children = (
+				84285AAE1F006BC0002E8708 /* libxml2.2.tbd */,
+			);
+			name = Frameworks;
+			sourceTree = "<group>";
+		};
 		84469CE31EFA2FB0004A6B28 /* Feeds */ = {
 			isa = PBXGroup;
 			children = (
@@ -189,6 +207,8 @@
 				84469CEA1EFA3000004A6B28 /* RSOPMLFeedSpecifier.m */,
 				84469CEB1EFA3000004A6B28 /* RSOPMLItem.h */,
 				84469CEC1EFA3000004A6B28 /* RSOPMLItem.m */,
+				84285AB01F00702E002E8708 /* RSOPMLError.h */,
+				84285AB11F00702E002E8708 /* RSOPMLError.m */,
 			);
 			path = OPML;
 			sourceTree = "<group>";
@@ -233,12 +253,13 @@
 		84469D1C1EFA3134004A6B28 /* XML */ = {
 			isa = PBXGroup;
 			children = (
+				84285AA71F005D53002E8708 /* RSSParser.swift */,
+				84285AAB1F006754002E8708 /* AtomParser.swift */,
+				84285AA91F006456002E8708 /* RSParsedFeedTransformer.swift */,
 				84469D1D1EFA3134004A6B28 /* RSAtomParser.h */,
 				84469D1E1EFA3134004A6B28 /* RSAtomParser.m */,
 				84469D251EFA3134004A6B28 /* RSRSSParser.h */,
 				84469D261EFA3134004A6B28 /* RSRSSParser.m */,
-				84469D1F1EFA3134004A6B28 /* RSFeedParser.h */,
-				84469D201EFA3134004A6B28 /* RSFeedParser.m */,
 				84469D211EFA3134004A6B28 /* RSParsedArticle.h */,
 				84469D221EFA3134004A6B28 /* RSParsedArticle.m */,
 				84469D231EFA3134004A6B28 /* RSParsedFeed.h */,
@@ -261,6 +282,7 @@
 		84FF5F7A1EFA285800C15A01 = {
 			isa = PBXGroup;
 			children = (
+				84285AB41F007255002E8708 /* README.md */,
 				84D81BDA1EFA28E700652332 /* RSParser.h */,
 				84469CE11EFA2F3E004A6B28 /* ParserData.swift */,
 				84469CE31EFA2FB0004A6B28 /* Feeds */,
@@ -272,6 +294,7 @@
 				84D81BD91EFA28E700652332 /* Info.plist */,
 				84FF5F911EFA285800C15A01 /* RSParserTests */,
 				84FF5F851EFA285800C15A01 /* Products */,
+				84285AAD1F006BC0002E8708 /* Frameworks */,
 			);
 			sourceTree = "<group>";
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@@ -312,13 +335,13 @@
 				84469D0B1EFA307E004A6B28 /* RSHTMLMetadataParser.h in Headers */,
 				84469CFC1EFA3069004A6B28 /* RSSAXParser.h in Headers */,
 				84469D071EFA307E004A6B28 /* RSHTMLLinkParser.h in Headers */,
-				84469D291EFA3134004A6B28 /* RSFeedParser.h in Headers */,
 				84469D0D1EFA307E004A6B28 /* RSSAXHTMLParser.h in Headers */,
 				84469D2B1EFA3134004A6B28 /* RSParsedArticle.h in Headers */,
 				84469D2F1EFA3134004A6B28 /* RSRSSParser.h in Headers */,
 				84469CF31EFA3000004A6B28 /* RSOPMLFeedSpecifier.h in Headers */,
 				84469CF11EFA3000004A6B28 /* RSOPMLDocument.h in Headers */,
 				84469D091EFA307E004A6B28 /* RSHTMLMetadata.h in Headers */,
+				84285AB21F00702E002E8708 /* RSOPMLError.h in Headers */,
 				84469D161EFA30A2004A6B28 /* NSString+RSParser.h in Headers */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -434,13 +457,15 @@
 				84469CE21EFA2F3E004A6B28 /* ParserData.swift in Sources */,
 				84469CF21EFA3000004A6B28 /* RSOPMLDocument.m in Sources */,
 				84469CF61EFA3000004A6B28 /* RSOPMLItem.m in Sources */,
-				84469D2A1EFA3134004A6B28 /* RSFeedParser.m in Sources */,
 				84D81BE41EFA2D3D00652332 /* ParsedItem.swift in Sources */,
+				84285AAC1F006754002E8708 /* AtomParser.swift in Sources */,
+				84285AA81F005D53002E8708 /* RSSParser.swift in Sources */,
 				84469D421EFF2B2D004A6B28 /* JSONTypes.swift in Sources */,
 				84469D0C1EFA307E004A6B28 /* RSHTMLMetadataParser.m in Sources */,
 				84469D0A1EFA307E004A6B28 /* RSHTMLMetadata.m in Sources */,
 				84469D171EFA30A2004A6B28 /* NSString+RSParser.m in Sources */,
 				84469D2C1EFA3134004A6B28 /* RSParsedArticle.m in Sources */,
+				84285AAA1F006456002E8708 /* RSParsedFeedTransformer.swift in Sources */,
 				84469D2E1EFA3134004A6B28 /* RSParsedFeed.m in Sources */,
 				84469CF81EFA3000004A6B28 /* RSOPMLParser.m in Sources */,
 				84469D401EFF29A9004A6B28 /* FeedParserError.swift in Sources */,
@@ -448,6 +473,7 @@
 				84469D281EFA3134004A6B28 /* RSAtomParser.m in Sources */,
 				84469D361EFF1190004A6B28 /* NSData+RSParser.m in Sources */,
 				84D81BE61EFA2DFB00652332 /* ParsedAttachment.swift in Sources */,
+				84285AB31F00702E002E8708 /* RSOPMLError.m in Sources */,
 				84D81BDE1EFA2B7D00652332 /* ParsedFeed.swift in Sources */,
 				84D81BE81EFA2E6700652332 /* ParsedHub.swift in Sources */,
 				84469D441F002CEF004A6B28 /* JSONFeedParser.swift in Sources */,
@@ -594,6 +620,7 @@
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				FRAMEWORK_VERSION = A;
+				HEADER_SEARCH_PATHS = "${SDKROOT}/usr/include/libxml2";
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/Frameworks";
@@ -617,6 +644,7 @@
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				FRAMEWORK_VERSION = A;
+				HEADER_SEARCH_PATHS = "${SDKROOT}/usr/include/libxml2";
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/Frameworks";
diff --git a/Frameworks/RSParser/SAX/RSSAXParser.m b/Frameworks/RSParser/SAX/RSSAXParser.m
index fdfa18624..46916d91b 100755
--- a/Frameworks/RSParser/SAX/RSSAXParser.m
+++ b/Frameworks/RSParser/SAX/RSSAXParser.m
@@ -9,7 +9,7 @@
 #import <libxml/tree.h>
 #import <libxml/xmlstring.h>
 #import "RSSAXParser.h"
-#import "RSXMLInternal.h"
+#import "RSParserInternal.h"
 
 
 @interface RSSAXParser ()
diff --git a/Frameworks/RSParser/Utilities/NSData+RSParser.m b/Frameworks/RSParser/Utilities/NSData+RSParser.m
index 19d88d474..4974a1718 100644
--- a/Frameworks/RSParser/Utilities/NSData+RSParser.m
+++ b/Frameworks/RSParser/Utilities/NSData+RSParser.m
@@ -13,6 +13,7 @@
 static BOOL bytesAreProbablyHTML(const char *bytes, NSUInteger numberOfBytes);
 static BOOL bytesAreProbablyXML(const char *bytes, NSUInteger numberOfBytes);
 static BOOL bytesStartWithStringIgnoringWhitespace(const char *string, const char *bytes, NSUInteger numberOfBytes);
+static BOOL didFindString(const char *string, const char *bytes, NSUInteger numberOfBytes);
 
 @implementation NSData (RSParser)
 
@@ -55,7 +56,7 @@ static BOOL bytesStartWithStringIgnoringWhitespace(const char *string, const cha
 		return NO;
 	}
 
-	return didFindString("<rss", bytes, length);
+	return didFindString("<rss", self.bytes, self.length);
 }
 
 - (BOOL)isProbablyAtom {
@@ -64,7 +65,7 @@ static BOOL bytesStartWithStringIgnoringWhitespace(const char *string, const cha
 		return NO;
 	}
 
-	return didFindString("<feed", bytes, length);
+	return didFindString("<feed", self.bytes, self.length);
 }
 
 @end
@@ -81,8 +82,8 @@ static BOOL bytesStartWithStringIgnoringWhitespace(const char *string, const cha
 	NSUInteger i = 0;
 	for (i = 0; i < numberOfBytes; i++) {
 
-		const char *ch = bytes[i];
-		if (ch == ' ' || ch = '\r' || ch == '\n' || ch == '\t') {
+		const char ch = bytes[i];
+		if (ch == ' ' || ch == '\r' || ch == '\n' || ch == '\t') {
 			continue;
 		}
 
@@ -110,7 +111,7 @@ static BOOL bytesAreProbablyHTML(const char *bytes, NSUInteger numberOfBytes) {
 		return YES;
 	}
 
-	if (didFindString("<", bytes, numberOfBytes) {
+	if (didFindString("<", bytes, numberOfBytes)) {
 		if (didFindString("doctype html", bytes, numberOfBytes)) {
 			return YES;
 		}
@@ -127,6 +128,6 @@ static BOOL bytesAreProbablyHTML(const char *bytes, NSUInteger numberOfBytes) {
 
 static BOOL bytesAreProbablyXML(const char *bytes, NSUInteger numberOfBytes) {
 
-	return bytesStartWithStringIgnoringWhiteSpace("<?xml", bytes, numberOfBytes);
+	return bytesStartWithStringIgnoringWhitespace("<?xml", bytes, numberOfBytes);
 }
 
diff --git a/Frameworks/RSParser/Utilities/NSString+RSParser.m b/Frameworks/RSParser/Utilities/NSString+RSParser.m
index fb9596ee7..d6c705841 100755
--- a/Frameworks/RSParser/Utilities/NSString+RSParser.m
+++ b/Frameworks/RSParser/Utilities/NSString+RSParser.m
@@ -6,6 +6,7 @@
 //  Copyright © 2015 Ranchero Software, LLC. All rights reserved.
 //
 
+#import <CommonCrypto/CommonDigest.h>
 #import "NSString+RSParser.h"
 
 
diff --git a/Frameworks/RSParser/Utilities/RSParserInternal.h b/Frameworks/RSParser/Utilities/RSParserInternal.h
index b198e2076..76209e076 100755
--- a/Frameworks/RSParser/Utilities/RSParserInternal.h
+++ b/Frameworks/RSParser/Utilities/RSParserInternal.h
@@ -10,7 +10,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-BOOL RSParser_IsEmpty(id _Nullable obj);
+BOOL RSParserObjectIsEmpty(id _Nullable obj);
 BOOL RSParserStringIsEmpty(NSString * _Nullable s);
 
 
diff --git a/Frameworks/RSParser/Utilities/RSParserInternal.m b/Frameworks/RSParser/Utilities/RSParserInternal.m
index cf8661971..1bd66ce40 100755
--- a/Frameworks/RSParser/Utilities/RSParserInternal.m
+++ b/Frameworks/RSParser/Utilities/RSParserInternal.m
@@ -1,5 +1,5 @@
 //
-//  RSXMLInternal.m
+//  RSParserInternal.m
 //  RSParser
 //
 //  Created by Brent Simmons on 12/26/16.
@@ -7,7 +7,7 @@
 //
 
 #import <CommonCrypto/CommonDigest.h>
-#import "RSXMLInternal.h"
+#import "RSParserInternal.h"
 
 
 static BOOL RSParserIsNil(id obj) {