
PouchDB
RxDB
GUN
Thymer
Yjs
FeathersJS
Git Large File Storage
A JSON-like data structure (a CRDT) that can be modified concurrently by different users, and merged again automatically.

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Which is more popular?
Based on our record, Automerge seems to be more popular. It has been mentioned 13 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | automerge.org | opalstack.com |
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What each product offers, as listed by its team.


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An editorial look at what each product does well and who it suits.


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Automerge: a new foundation for collaboration software
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Recommendations tracked on public social media and blogs since March 2021.


This is apparently based on Automerge.[1] It sounds like a really good idea. Is it a good enough idea to sync MMO game clients and servers? Paper from 2012, last Automerge site update in 2025. Why isn't this everywhere? [1]... - Source: Hacker News / about 2 months ago
Automerge (official) - Automerge project goals, JSON-like CRDT semantics, and cross-platform bindings. (automerge.org). - Source: dev.to / 3 months ago
For values that don't have a natural merge function (or where you don't want to bother writing one), would it make sense to sync update logs instead? That is: - The synced value is a history of client updates, sorted in some eventually... - Source: Hacker News / 4 months ago
Tracking Opalstack since Sep 2023.
When comparing Automerge and Opalstack, you can also consider the following products.

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Web-based Project management and task planning for people who hate project management and task planning. For individuals, teams and small businesses.
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A CRDT framework with a powerful abstraction of shared data, Shared data types for building collaborative software
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Wow your users. Build incredible real-time applications in record time.
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