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

JavaScript Operator Lookup
JavaScripting
Let's write robust, well-tested, modular JavaScript code.

Which is more popular?
Based on our record, Automerge seems to be more popular. It has been mentioned 14 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | automerge.org | mjavascript.com |
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What each product offers, as listed by its team.


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


No analysis of Automerge yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Automerge: a new foundation for collaboration software
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Automerge and Modular JavaScript. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


This is the same principle behind Automerge and Yjs, which is how collaborative editors let twelve people type into one paragraph without a central referee. - Source: dev.to / 8 days ago
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 / 2 months ago
Automerge (official) - Automerge project goals, JSON-like CRDT semantics, and cross-platform bindings. (automerge.org). - Source: dev.to / 4 months ago
Tracking Modular JavaScript since Mar 2021.
When comparing Automerge and Modular JavaScript, you can also consider the following products.

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A full list of JavaScript operators with examples
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A fast, offline-first, reactive Database for JavaScript Applications
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Ranking of top JavaScript libraries, frameworks, and plugins
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A CRDT framework with a powerful abstraction of shared data, Shared data types for building collaborative software
Compare Yjs to Automerge or Modular JavaScript: