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PowerSync is a service and set of client SDKs that keeps backend databases in sync with on-device embedded SQLite databases. It lets you avoid the complexities of using APIs to move app state over the network, and enables real-time reactive local-first & offline-first apps that remain available even when network connectivity is poor or non-existent.
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Supported Backend Databases

PowerSync is designed to be backend database agnostic, and currently supports:

Postgres

MongoDB

MySQL (Beta)

SQL Server (Alpha)

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Supported Client SDKs

PowerSync is also designed to be client-side stack agnostic, and currently has client SDKs available for:

Dart/Flutter

React Native & Expo

JavaScript Web

Capacitor (alpha)