head to head · open source
Bluesky vs fedify
Bluesky has 18,364 GitHub stars, 2,872 forks, 2,400 open issues and last shipped yesterday. fedify has 1,030 stars, 144 forks, 95 open issues and last shipped yesterday. Bluesky leads on adoption by 1,683% (18,364 vs 1,030 stars). Bluesky is written in TypeScript under MIT; fedify is written in TypeScript under MIT. Bluesky has attracted 16% as many forks as stars, fedify 14%. Bluesky was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Bluesky | fedify | |
|---|---|---|
| GitHub stars | ★ 18K | ★ 1.0K |
| License | MIT | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 2.9K | ⑂ 144 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Bluesky if
- You weight community size — 18K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick fedify if
- You want the fedify feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and fedify fits your workflow better
About Bluesky
Bluesky Social App Welcome friends! This is the codebase for the Bluesky Social app. Get the app itself: Web: bsky.app iOS: App Store Android: Play Store Development Resources This is a React Native application, written in the TypeScript programming language. It builds on the atproto TypeScript packages (like @atproto/api ), which are also open source, but in a different git repository. There is a small amount of Go language source code (in ./bskyweb/ ), for a web service that returns the React Native Web application. The Build Instructions are a good place to get started with the app itself. The Authenticated…
read the full Bluesky overview →
About fedify
Fedify: an ActivityPub server framework ======================================================= [![JSR][JSR badge]][JSR] [![npm][npm badge]][npm] [![GitHub Actions][GitHub Actions badge]][GitHub Actions] [![Matrix][Matrix badge]][Matrix] [![@fedify@hackers.pub][@fedify@hackers.pub badge]][@fedify@hackers.pub] Fedify is a TypeScript library for building federated server apps powered by [ActivityPub] and other standards, so called [fediverse].[^1] It aims to eliminate the complexity and boilerplate code when building a federated server app, so that you can focus on your business logic and user experience…
read the full fedify overview →
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Frequently asked questions
Is Bluesky or fedify more popular?
Bluesky has 18,364 GitHub stars and fedify has 1,030. Bluesky has the larger community by that measure.
Are Bluesky and fedify free?
Both are open source. Bluesky is licensed under MIT and fedify under MIT. Neither carries a licence fee.
What is the difference between Bluesky and fedify?
Bluesky is written in TypeScript and fedify in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Bluesky or fedify?
Choose Bluesky if you want the larger community (18,364 stars) or its MIT licence terms. Choose fedify if its feature set, stack or MIT licence fits better. Both are self-hostable.