gritzko/swarm

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

2666 stars · 99 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Swarm.js is a JavaScript replicated model (M of MVC) library implementing real-time data sync based on CRDTs and Replicated Object Notation (RON). It provides offline-capable, conflict-free data replication for web and mobile apps, like 'git for data' with real-time merging.

Use cases

• sync data between client and server in real time
• build collaborative editing features
• make my app work offline and re-sync on reconnect
• replicate an object model across devices without merge conflicts
• self-hosted alternative to Firebase realtime sync
• cache data locally in a web or React Native app

When to choose

• you need offline-first, conflict-free data sync in JavaScript
• you want real-time collaboration with automatic merging
• you prefer self-hosting over Firebase-style BaaS

When to avoid

• you need an actively developed JavaScript implementation - the README marks this code as historical, pointing to RDX C/Go successors
• you need a production-proven general-purpose database
• you are unwilling to work with CRDT concepts and RON internals

Facets

library · maturity maintenance

database state-management websocket serialization microservices web-development databases browser cross-platform crdt offline-first data-sync replicated-data real-time-collaboration ron real-time javascript nodejs

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