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Version control for you data

About Automerge

Automerge is a local-first sync engine for multiplayer apps that works offline, prevents conflicts, and runs fast. It serves developers building collaborative, real-time applications who need reliable client-side data synchronization and a shared source of truth without centralized servers.

Automerge screenshot

Key Features

Developers need a local-first engine that keeps everyone in sync without relying on a central backend, while still handling edits when offline and merging conflicts deterministically. Automerge delivers these capabilities with a versioned history, offline-first synchronization, and flexible integration options:

Versioned History

Automerge remembers every change, enabling local branching and a complete history stored locally.

Offline-First Synchronization

Full functionality when offline; changes queue locally and sync when you reconnect.

Conflict-free Merges

Overlapping edits merge deterministically, preventing data loss and offering controls over the outcome.

Framework & Backend Compatibility

Works with React and other frameworks out of the box; plugins for Prosemirror and Codemirror; can run with any backend or the included sync server.

Summary

Best for frontend engineers, mobile teams, and game developers building offline-first collaborative experiences.

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