diff --git a/src/bridges/settings.ts b/src/bridges/settings.ts
index 0c78ace..6a289fe 100644
--- a/src/bridges/settings.ts
+++ b/src/bridges/settings.ts
@@ -1,4 +1,4 @@
-import { SourceGroup, ViewType, ThemeSettings, SearchEngines } from "../schema-types"
+import { SourceGroup, ViewType, ThemeSettings, SearchEngines, ServiceConfigs } from "../schema-types"
 import { ipcRenderer } from "electron"
 
 const settingsBridge = {
@@ -82,6 +82,13 @@ const settingsBridge = {
         ipcRenderer.invoke("set-search-engine", engine)
     },
 
+    getServiceConfigs: (): ServiceConfigs => {
+        return ipcRenderer.sendSync("get-service-configs")
+    },
+    setServiceConfigs: (configs: ServiceConfigs) => {
+        ipcRenderer.invoke("set-service-configs", configs)
+    },
+
     getAll: () => {
         return ipcRenderer.sendSync("get-all-settings") as Object
     },
diff --git a/src/components/settings.tsx b/src/components/settings.tsx
index cc39723..7a67f46 100644
--- a/src/components/settings.tsx
+++ b/src/components/settings.tsx
@@ -8,6 +8,7 @@ import SourcesTabContainer from "../containers/settings/sources-container"
 import GroupsTabContainer from "../containers/settings/groups-container"
 import AppTabContainer from "../containers/settings/app-container"
 import RulesTabContainer from "../containers/settings/rules-container"
+import ServiceTabContainer from "../containers/settings/service-container"
 
 type SettingsProps = {
     display: boolean,
@@ -42,6 +43,9 @@ class Settings extends React.Component<SettingsProps> {
                     <PivotItem headerText={intl.get("settings.rules")} itemIcon="FilterSettings">
                         <RulesTabContainer />
                     </PivotItem>
+                    <PivotItem headerText={intl.get("settings.service")} itemIcon="CloudImportExport">
+                        <ServiceTabContainer />
+                    </PivotItem>
                     <PivotItem headerText={intl.get("settings.app")} itemIcon="Settings">
                         <AppTabContainer />
                     </PivotItem>
diff --git a/src/components/settings/groups.tsx b/src/components/settings/groups.tsx
index ae6c117..31d2a01 100644
--- a/src/components/settings/groups.tsx
+++ b/src/components/settings/groups.tsx
@@ -3,7 +3,7 @@ import intl from "react-intl-universal"
 import { SourceGroup } from "../../schema-types"
 import { SourceState, RSSSource } from "../../scripts/models/source"
 import { IColumn, Selection, SelectionMode, DetailsList, Label, Stack,
-     TextField, PrimaryButton, DefaultButton, Dropdown, IDropdownOption, CommandBarButton, MarqueeSelection, IDragDropEvents, IDragDropContext } from "@fluentui/react"
+     TextField, PrimaryButton, DefaultButton, Dropdown, IDropdownOption, CommandBarButton, MarqueeSelection, IDragDropEvents } from "@fluentui/react"
 import DangerButton from "../utils/danger-button"
 
 type GroupsTabProps = {
@@ -233,7 +233,7 @@ class GroupsTab extends React.Component<GroupsTabProps, GroupsTabState> {
     createGroup = (event: React.FormEvent) => {
         event.preventDefault()
         let trimmed = this.state.newGroupName.trim()
-        if (trimmed.length > 0) this.props.createGroup(trimmed)
+        if (this.validateNewGroupName(trimmed) === "") this.props.createGroup(trimmed)
     }
 
     addToGroup = () => {
diff --git a/src/components/settings/service.tsx b/src/components/settings/service.tsx
new file mode 100644
index 0000000..684c675
--- /dev/null
+++ b/src/components/settings/service.tsx
@@ -0,0 +1,64 @@
+import * as React from "react"
+import intl from "react-intl-universal"
+import { ServiceConfigs, SyncService } from "../../schema-types"
+import { Stack, Icon, Link, Dropdown, IDropdownOption } from "@fluentui/react"
+
+export type ServiceTabProps = {
+    configs: ServiceConfigs
+}
+
+type ServiceTabState = {
+    type: SyncService
+}
+
+export class ServiceTab extends React.Component<ServiceTabProps, ServiceTabState> {
+    constructor(props: ServiceTabProps) {
+        super(props)
+        this.state = {
+            type: props.configs.type
+        }
+    }
+
+    serviceOptions = (): IDropdownOption[] => [
+        { key: SyncService.Fever, text: "Fever API" },
+        { key: -1, text: intl.get("service.suggest") },
+    ]
+
+    onServiceOptionChange = (_, option: IDropdownOption) => {
+        if (option.key === -1) {
+            window.utils.openExternal("https://github.com/yang991178/fluent-reader/issues/23")
+        } else {
+
+        }
+    }
+
+    render = () => (
+        <div className="tab-body">
+            {this.state.type === SyncService.None
+            ? (
+                <Stack horizontalAlign="center" style={{marginTop: 64}}>
+                    <Stack className="settings-rules-icons" horizontal tokens={{childrenGap: 12}}>
+                        <Icon iconName="ThisPC" />
+                        <Icon iconName="Sync" />
+                        <Icon iconName="Cloud" />
+                    </Stack>
+                    <span className="settings-hint">
+                        {intl.get("service.intro")}
+                        <Link 
+                            onClick={() => window.utils.openExternal("https://github.com/yang991178/fluent-reader/wiki/Support#services")}
+                            style={{marginLeft: 6}}>
+                            {intl.get("rules.help")}
+                        </Link>
+                    </span>
+                    <Dropdown
+                        placeHolder={intl.get("service.select")}
+                        options={this.serviceOptions()}
+                        selectedKey={null}
+                        onChange={this.onServiceOptionChange}
+                        style={{marginTop: 32, width: 180}} />
+                </Stack>
+            )
+            : null}
+        </div>
+    )
+}
\ No newline at end of file
diff --git a/src/containers/settings/service-container.tsx b/src/containers/settings/service-container.tsx
new file mode 100644
index 0000000..463dfc1
--- /dev/null
+++ b/src/containers/settings/service-container.tsx
@@ -0,0 +1,21 @@
+import { connect } from "react-redux"
+import { createSelector } from "reselect"
+import { RootState } from "../../scripts/reducer"
+import { ServiceTab } from "../../components/settings/service"
+import { AppDispatch } from "../../scripts/utils"
+
+const getService = (state: RootState) => state.service
+
+const mapStateToProps = createSelector(
+    [getService],
+    (service) => ({
+        configs: service
+    })
+)
+
+const mapDispatchToProps = (dispatch: AppDispatch) => ({
+    
+})
+
+const ServiceTabContainer = connect(mapStateToProps, mapDispatchToProps)(ServiceTab)
+export default ServiceTabContainer
\ No newline at end of file
diff --git a/src/main/settings.ts b/src/main/settings.ts
index b347d5b..8586836 100644
--- a/src/main/settings.ts
+++ b/src/main/settings.ts
@@ -1,5 +1,6 @@
 import Store = require("electron-store")
-import { SchemaTypes, SourceGroup, ViewType, ThemeSettings, SearchEngines } from "../schema-types"
+import { SchemaTypes, SourceGroup, ViewType, ThemeSettings, SearchEngines,
+    SyncService, ServiceConfigs } from "../schema-types"
 import { ipcMain, session, nativeTheme, app } from "electron"
 import { WindowManager } from "./window"
 
@@ -136,3 +137,11 @@ ipcMain.on("get-search-engine", (event) => {
 ipcMain.handle("set-search-engine", (_, engine: SearchEngines) => {
     store.set(SEARCH_ENGINE_STORE_KEY, engine)
 })
+
+const SERVICE_CONFIGS_STORE_KEY = "serviceConfigs"
+ipcMain.on("get-service-configs", (event) => {
+    event.returnValue = store.get(SERVICE_CONFIGS_STORE_KEY, { type: SyncService.None })
+})
+ipcMain.handle("set-service-configs", (_, configs: ServiceConfigs) => {
+    store.set(SERVICE_CONFIGS_STORE_KEY, configs)
+})
diff --git a/src/schema-types.ts b/src/schema-types.ts
index bbb354c..f33ee6c 100644
--- a/src/schema-types.ts
+++ b/src/schema-types.ts
@@ -36,6 +36,13 @@ export const enum ImageCallbackTypes {
     OpenExternal, OpenExternalBg, SaveAs, Copy, CopyLink
 }
 
+export const enum SyncService {
+    None, Fever
+}
+export interface ServiceConfigs {
+    type: SyncService
+}
+
 export type SchemaTypes = {
     version: string
     theme: ThemeSettings
@@ -48,4 +55,5 @@ export type SchemaTypes = {
     menuOn: boolean
     fetchInterval: number
     searchEngine: SearchEngines
+    serviceConfigs: ServiceConfigs
 }
diff --git a/src/scripts/i18n/en-US.json b/src/scripts/i18n/en-US.json
index 6a128d3..0e61a28 100644
--- a/src/scripts/i18n/en-US.json
+++ b/src/scripts/i18n/en-US.json
@@ -103,6 +103,7 @@
         "sources": "Sources",
         "grouping": "Groups",
         "rules": "Rules",
+        "service": "Service",
         "app": "Preferences",
         "about": "About",
         "version": "Version",
@@ -175,6 +176,11 @@
         "hint": "Rules will be applied in order. Drag and drop to reorder.",
         "test": "Test rules"
     },
+    "service": {
+        "intro": "Sync across devices with RSS services.",
+        "select": "Select a service",
+        "suggest": "Suggest a new service"
+    },
     "app": {
         "cleanup": "Clean up",
         "cache": "Clear cache",
diff --git a/src/scripts/i18n/zh-CN.json b/src/scripts/i18n/zh-CN.json
index 0bcc240..5ad176e 100644
--- a/src/scripts/i18n/zh-CN.json
+++ b/src/scripts/i18n/zh-CN.json
@@ -101,6 +101,7 @@
         "sources": "订阅源",
         "grouping": "分组与排序",
         "rules": "规则",
+        "service": "服务",
         "app": "应用偏好",
         "about": "关于",
         "version": "版本",
@@ -173,6 +174,11 @@
         "hint": "规则将按顺序执行，拖拽以排序",
         "test": "测试规则"
     },
+    "service": {
+        "intro": "通过 RSS 服务跨设备保持同步",
+        "select": "选择服务",
+        "suggest": "建议一项新服务"
+    },
     "app": {
         "cleanup": "清理",
         "cache": "清空缓存",
diff --git a/src/scripts/models/item.ts b/src/scripts/models/item.ts
index 08ff3fb..6dd1547 100644
--- a/src/scripts/models/item.ts
+++ b/src/scripts/models/item.ts
@@ -5,6 +5,7 @@ import { RSSSource } from "./source"
 import { FeedActionTypes, INIT_FEED, LOAD_MORE, FilterType, initFeeds } from "./feed"
 import Parser from "@yang991178/rss-parser"
 import { pushNotification, setupAutoFetch } from "./app"
+import { getServiceHooks, syncWithService } from "./service"
 
 export class RSSItem {
     _id: string
@@ -171,13 +172,18 @@ export function insertItems(items: RSSItem[]): Promise<RSSItem[]> {
 }
 
 export function fetchItems(background = false): AppThunk<Promise<void>> {
-    return (dispatch, getState) => {
+    return async (dispatch, getState) => {
+        try {
+            await dispatch(syncWithService())
+        } catch (err) {
+            console.log(err)
+        }
         let promises = new Array<Promise<RSSItem[]>>()
         if (!getState().app.fetchingItems) {
             let timenow = new Date().getTime()
             let sources = <RSSSource[]>Object.values(getState().sources).filter(s => {
                 let last = s.lastFetched ? s.lastFetched.getTime() : 0
-                return (last > timenow) || (last + (s.fetchFrequency || 0) * 60000 <= timenow)
+                return !s.isRemote && ((last > timenow) || (last + (s.fetchFrequency || 0) * 60000 <= timenow))
             })
             for (let source of sources) {
                 let promise = RSSSource.fetchItems(source)
@@ -185,7 +191,8 @@ export function fetchItems(background = false): AppThunk<Promise<void>> {
                 promises.push(promise)
             }
             dispatch(fetchItemsRequest(promises.length))
-            return Promise.allSettled(promises).then(results => new Promise<void>((resolve, reject) => { 
+            const results = await Promise.allSettled(promises)
+            return await new Promise<void>((resolve, reject) => {
                 let items = new Array<RSSItem>()
                 results.map((r, i) => {
                     if (r.status === "fulfilled") items.push(...r.value)
@@ -216,9 +223,8 @@ export function fetchItems(background = false): AppThunk<Promise<void>> {
                     console.log(err)
                     reject(err)
                 })
-            }))
+            })
         }
-        return new Promise((resolve) => { resolve() })
     }
 }
 
@@ -233,10 +239,13 @@ const markUnreadDone = (item: RSSItem): ItemActionTypes => ({
 })
 
 export function markRead(item: RSSItem): AppThunk {
-    return (dispatch) => {
+    return (dispatch, getState) => {
         if (!item.hasRead) {
             db.idb.update({ _id: item._id }, { $set: { hasRead: true } })
             dispatch(markReadDone(item))
+            if (getState().sources[item.source].isRemote) {
+                dispatch(getServiceHooks()).markRead?.(item)
+            }
         }
     }
 }
@@ -287,14 +296,18 @@ export function markAllRead(sids: number[] = null, date: Date = null, before = t
                 if (date) callback(affectedDocuments as unknown as RSSItem[])
         })
         if (!date) callback()
+        dispatch(getServiceHooks()).markAllRead?.(sids, date, before)
     }
 }
 
 export function markUnread(item: RSSItem): AppThunk {
-    return (dispatch) => {
+    return (dispatch, getState) => {
         if (item.hasRead) {
             db.idb.update({ _id: item._id }, { $set: { hasRead: false } })
             dispatch(markUnreadDone(item))
+            if (getState().sources[item.source].isRemote) {
+                dispatch(getServiceHooks()).markUnread?.(item)
+            }
         }
     }
 }
@@ -305,13 +318,18 @@ const toggleStarredDone = (item: RSSItem): ItemActionTypes => ({
 })
 
 export function toggleStarred(item: RSSItem): AppThunk {
-    return (dispatch) => {
+    return (dispatch, getState) => {
         if (item.starred === true) {
             db.idb.update({ _id: item._id }, { $unset: { starred: true } })
         } else {
             db.idb.update({ _id: item._id }, { $set: { starred: true } })
         }
         dispatch(toggleStarredDone(item))
+        if (getState().sources[item.source].isRemote) {
+            const hooks = dispatch(getServiceHooks())
+            if (item.starred) hooks.unstar?.(item)
+            else hooks.star?.(item)
+        }
     }
 }
 
diff --git a/src/scripts/models/service.ts b/src/scripts/models/service.ts
new file mode 100644
index 0000000..8d840e1
--- /dev/null
+++ b/src/scripts/models/service.ts
@@ -0,0 +1,70 @@
+import { SyncService, ServiceConfigs } from "../../schema-types"
+import { AppThunk } from "../utils"
+import { RSSItem } from "./item"
+
+import { feverServiceHooks } from "./services/fever"
+
+export interface ServiceHooks {
+    authenticate?: (configs: ServiceConfigs) => Promise<boolean>
+    updateSources?: () => AppThunk<Promise<void>>
+    fetchItems?: () => AppThunk<Promise<void>>
+    syncItems?: () => AppThunk<Promise<void>>
+    markRead?: (item: RSSItem) => AppThunk
+    markUnread?: (item: RSSItem) => AppThunk
+    markAllRead?: (sids?: number[], date?: Date, before?: boolean) => AppThunk
+    star?: (item: RSSItem) => AppThunk
+    unstar?: (item: RSSItem) => AppThunk
+}
+
+export function getServiceHooksFromType(type: SyncService): ServiceHooks {
+    switch (type) {
+        case SyncService.Fever: return feverServiceHooks
+        default: return {}
+    }
+}
+
+export function getServiceHooks(): AppThunk<ServiceHooks> {
+    return (_, getState) => {
+        return getServiceHooksFromType(getState().service.type)
+    }
+}
+
+export function syncWithService(): AppThunk<Promise<void>> {
+    return async (dispatch) => {
+        const hooks = dispatch(getServiceHooks())
+        if (hooks.updateSources && hooks.fetchItems && hooks.syncItems) {
+            await dispatch(hooks.updateSources())
+            await dispatch(hooks.fetchItems())
+            await dispatch(hooks.syncItems())
+        }
+    }
+}
+
+export const SAVE_SERVICE_CONFIGS = "SAVE_SERVICE_CONFIGS"
+
+interface SaveServiceConfigsAction {
+    type: typeof SAVE_SERVICE_CONFIGS
+    configs: ServiceConfigs
+}
+
+export type ServiceActionTypes = SaveServiceConfigsAction
+
+export function saveServiceConfigs(configs: ServiceConfigs): AppThunk {
+    return (dispatch) => {
+        window.settings.setServiceConfigs(configs)
+        dispatch({
+            type: SAVE_SERVICE_CONFIGS,
+            configs: configs
+        })
+    }
+}
+
+export function serviceReducer(
+    state = window.settings.getServiceConfigs(),
+    action: ServiceActionTypes
+): ServiceConfigs {
+    switch (action.type) {
+        case SAVE_SERVICE_CONFIGS: return action.configs
+        default: return state
+    }
+}
\ No newline at end of file
diff --git a/src/scripts/models/services/fever.ts b/src/scripts/models/services/fever.ts
new file mode 100644
index 0000000..0d8305b
--- /dev/null
+++ b/src/scripts/models/services/fever.ts
@@ -0,0 +1,29 @@
+import { ServiceHooks } from "../service"
+import { ServiceConfigs } from "../../../schema-types"
+
+export interface FeverConfigs extends ServiceConfigs {
+    endpoint: string
+    username: string
+    password: string
+    apiKey: string
+    lastId?: number
+}
+
+async function fetchAPI(configs: FeverConfigs, params="") {
+    const response = await fetch(configs.endpoint + params, {
+        method: "POST",
+        headers: { "content-type": "application/x-www-form-urlencoded" },
+        body: `api_key=${configs.apiKey}`
+    })
+    return await response.json()
+}
+
+export const feverServiceHooks: ServiceHooks = {
+    authenticate: async (configs: FeverConfigs) => {
+        try {
+            return Boolean((await fetchAPI(configs)).auth)
+        } catch {
+            return false
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/scripts/models/source.ts b/src/scripts/models/source.ts
index 394a575..e9c8dca 100644
--- a/src/scripts/models/source.ts
+++ b/src/scripts/models/source.ts
@@ -18,6 +18,7 @@ export class RSSSource {
     openTarget: SourceOpenTarget
     unreadCount: number
     lastFetched: Date
+    isRemote?: true
     fetchFrequency?: number // in minutes
     rules?: SourceRule[]
 
diff --git a/src/scripts/reducer.ts b/src/scripts/reducer.ts
index 57763c9..6ac7d42 100644
--- a/src/scripts/reducer.ts
+++ b/src/scripts/reducer.ts
@@ -6,6 +6,7 @@ import { feedReducer } from "./models/feed"
 import { appReducer } from "./models/app"
 import { groupReducer } from "./models/group"
 import { pageReducer } from "./models/page"
+import { serviceReducer } from "./models/service"
 
 export const rootReducer = combineReducers({
     sources: sourceReducer,
@@ -13,6 +14,7 @@ export const rootReducer = combineReducers({
     feeds: feedReducer,
     groups: groupReducer,
     page: pageReducer,
+    service: serviceReducer,
     app: appReducer
 })