diff --git a/instance-monitoring-sites.md b/instance-monitoring-sites.md
new file mode 100644
index 0000000..8263542
--- /dev/null
+++ b/instance-monitoring-sites.md
@@ -0,0 +1,15 @@
+Sites that provide info about fediverse instances. I will move this info to a wiki page next week. If I'm missing any sites, please add them:
+
+* https://fediverse.network - ActivityPub and OStatus only
+
+* https://the-federation.info/ - originally Diaspora* protocol only, now include instances of all apps implementing all federated social network protocol
+
+* https://mnm.social/ - Mastadon only
+
+* http://sp3r4z.fr/mastodon -Mastodon only, no simple UI for web browser(?)
+
+* https://fediverse.joinout.de/ - OStatus protocol only(?)
+
+* https://mustafa.kotori.me/ - GNU Social only
+
+* https://kumu.io/wakest/fediverse - visualization, OStatus protocol only(?)
\ No newline at end of file