ElectricSQL

ElectricSQL is a sync engine that keeps PostgreSQL data in sync with local databases on the client. Your app reads and writes to a local store, and Electric handles bidirectional replication with the server. Instant reads, offline support, and real-time sync out of the box.

Works with any Postgres -compatible database. The sync layer sits between your existing backend and client apps, so you don't need to rewrite your API. Conflict resolution uses CRDTs under the hood. Good fit for collaborative apps, offline-capable mobile apps, and real-time dashboards.