Open source activitypub projects
Every project in the registry tagged activitypub, ranked by real GitHub adoption.
Decentralized social networking in your control
Decentralized video platform for true digital freedom
Build your own federated discussion community
Take control over your live stream video by running it yourself. Streaming + chat out of the box.
🌎 A completely free and open interplanetary-microblogging platform 🚀
Ad-free photo sharing with privacy and federation
A clean, Markdown-based publishing platform made for writers. Write together and build a community.
Decentralized social network for book lovers and readers
Voyager — a beautiful app for Lemmy and Piefed
ActivityPub server framework in TypeScript
A web content preservation service
Federated, ActivityPub-compatible social network server with friends, walls, and groups.
a single-user bookmarking website designed to live on the Fediverse
Federated short videos without corporate control
🎉 Social can be used for work, or to connect to the fediverse!
Related tags
Frequently asked questions
How many open source activitypub projects are there?
This registry tracks 15 projects tagged activitypub, with 123,839 GitHub stars between them. The most-adopted is Mastodon at 50,465 stars.
Are these activitypub projects free to use?
Yes — 14 of the 15 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which activitypub project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these activitypub projects still maintained?
14 of the 15 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.