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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 depending on centralized servers.

Automerge screenshot

Key Features

Teams rely on Automerge to enable offline-first collaboration and conflict-free synchronization across clients:

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 reconnected.

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; plugin support for Prosemirror and Codemirror; can run with any backend or with the included sync server.

Summary

The primary value for developers lies in a local-first synchronization engine that handles offline operation, deterministic merges, and versioned history, enabling collaborative applications to function with minimal dependency on centralized servers. Its differentiators include an open-source model with broad language bindings and straightforward integrations, allowing teams to own their backend and tailor synchronization to their use case.

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