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@@ -692,6 +692,10 @@ Nexcloud Hub
 
 [Telegram](https://telegram.org/) is a cross-platform, cloud-based instant messaging service. It has an open API and source code free for everyone. Telegram also provides end-to-end encrypted video calling, VoIP, file sharing and several other features.
 
+[ActivityPub](https://activitypub.rocks/) is a decentralized social networking protocol based on the ActivityStreams 2.0 data format. It provides a client to server API for creating, updating and deleting content, as well as a federated server to server API for delivering notifications and subscribing to content.
+
+[GoToSocial](https://gotosocial.org/) is an [ActivityPub](https://activitypub.rocks/) social network server, written in Golang.
+
 [Berty](https://github.com/berty/berty) is a secure peer-to-peer messaging app that works with or without internet access, cellular data or trust in the network.
 
 [Pleroma](https://pleroma.social/) is a free and open communication for everyone. Pleroma is social networking software compatible with other Fediverse software such as Misskey, Pixelfed, Mastodon and many others.