Open source crdt projects
Every project in the registry tagged crdt, ranked by real GitHub adoption.
Docs, whiteboards, and databases in one privacy-first workspace
The local-first database that runs on every JS runtime and replicates with your existing backend - no vendor, no lock-in - https://rxdb.info/
Peer-to-Peer Databases for the Decentralized Web
Broadcast, Presence, and Postgres Changes via WebSockets
🧩 Content editing tech stack for the web - BlockSuite is a toolkit for building editors and collaborative applications.
Self-hosted team workspace with chat, docs, and databases
Library for building distributed, real-time collaborative web applications
Peer-to-peer, editor-agnostic collaborative editing of local text files.
Related tags
Frequently asked questions
How many open source crdt projects are there?
This registry tracks 8 projects tagged crdt, with 132,216 GitHub stars between them. The most-adopted is Affine at 74,123 stars.
Are these crdt projects free to use?
Yes — 7 of the 8 carry an explicit open-source licence across 4 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 crdt 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 crdt projects still maintained?
6 of the 8 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.