JavaScript Database. A fast, local first, reactive Database for JavaScript Applications.

RxDB (short for Reactive Database) is a local-first, NoSQL-database for JavaScript Applications like Websites, hybrid Apps, Electron-Apps, Progressive Web Apps, Deno and Node.js.

• RxDB @ GitHub.
• Using localStorage in Modern Applications: A Comprehensive Guide @ RxDB Blog.

Sync for modern apps. The standard sync layer for local-first apps. Build reactive, realtime, local-first apps directly on Postgres.

ElectricSQL is a local-first software platform that makes it easy to develop high-quality, modern apps with instant reactivity, realtime multi-user collaboration and conflict-free offline support.

Local-first is a new development paradigm where your app code talks directly to an embedded local database and data syncs in the background via active-active database replication. Because the app code talks directly to a local database, apps feel instant. Because data syncs in the background via active-active replication it naturally supports multi-user collaboration and conflict-free offline.

• ElectricSQL @ GitHub.