14.7k
Automerge Classic
A JSON-like data structure (a CRDT) that allows concurrent modifications by different users and automatically merges them.
👨💻
Development🛠️
Tools📦
Version Control
3 Open Source Alternatives to Yjs
There are 3 open-source alternatives to Yjs in this directory. The most popular is Automerge Classic with 14.7k GitHub stars, followed by Automerge(6.2k stars). All are open source, free to use, and many can be self-hosted.
Quick comparison
| # | Tool | Stars | Language | License |
|---|---|---|---|---|
| 1 | Automerge Classic A JSON-like data structure (a CRDT) that allows concurrent modifications by different users and automatically merges them. | 14.7k | JavaScript | MIT License |
| 2 | Automerge Automerge is a powerful library that provides a JSON-like Conflict-free Replicated Data Type (CRDT) data structure, enabling concurrent modifications by different users and automatic merging of changes. It helps developers build collaborative and offline-first applications with strong consistency guarantees. | 6.2k | JavaScript | MIT License |
| 3 | Liveblocks Liveblocks provides customizable, real-time collaborative features—presence, comments, storage, and AI-powered workflows—to turn your app into a multiplayer experience. Designed for modern apps needing real-time collaboration and seamless user interaction, Liveblocks enables developers to easily integrate collaborative and AI-ready features without overhauling their product roadmap. | 4.5k | TypeScript | Apache License 2.0 |
All open-source alternatives to Yjs
6.2k
Automerge
Automerge is a powerful library that provides a JSON-like Conflict-free Replicated Data Type (CRDT) data structure, enabling concurrent modifications by different users and automatic merging of changes. It helps developers build collaborative and offline-first applications with strong consistency guarantees.
👨💻
Development🧰
Framework💫
State🛠️
Tools
4.5k
Liveblocks
Liveblocks provides customizable, real-time collaborative features—presence, comments, storage, and AI-powered workflows—to turn your app into a multiplayer experience. Designed for modern apps needing real-time collaboration and seamless user interaction, Liveblocks enables developers to easily integrate collaborative and AI-ready features without overhauling their product roadmap.
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API⚡
Productivity🤖
AI🌐
Web
Frequently asked questions
What are the best open-source alternatives to Yjs?
The top three are Automerge Classic(14.7k stars), Automerge(6.2k stars), Liveblocks(4.5k stars). All are open source and free to use.
Are these alternatives to Yjs free?
Yes. Every tool listed here is open source and free to use in your own projects. Many can be self-hosted on your own infrastructure, which means no subscription fees and full control over your data.
Can I self-host an alternative to Yjs?
Many of the alternatives listed are self-hostable. Each tool's page lists hosting details, system requirements, and licensing terms.
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