Open source federation projects
Every project in the registry tagged federation, ranked by real GitHub adoption.
Secure cloud collaboration platform for organizations
Internet-scale OpenID Certified™ OpenID Connect and OAuth2.1 provider that integrates with your user management through headless APIs. Solve OIDC/OAuth2 user ca
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.
An AI Gateway, registry, and proxy that sits in front of any MCP, A2A, or REST/gRPC APIs, exposing a unified endpoint with centralized discovery, guardrails and
Decentralized social network for book lovers and readers
Social server with an ActivityStreams API
A federated GraphQL API gateway
Open-source GraphQL federation platform
🎉 Social can be used for work, or to connect to the fediverse!
Related tags
Frequently asked questions
How many open source federation projects are there?
This registry tracks 12 projects tagged federation, with 101,259 GitHub stars between them. The most-adopted is Nextcloud at 37,392 stars.
Are these federation projects free to use?
Yes — 11 of the 12 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 federation 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 federation projects still maintained?
10 of the 12 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.