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PowerSync

Sync service that keeps a client-side SQLite database in step with a backend database, self-hostable as a Docker image.

PowerSync is a sync engine that keeps a client-side SQLite database in step with a backend database. The service sits between the two: it replicates changes from the source database, stores the data it prepares for each client in a bucket storage database, and streams that data to the clients. It started as a component of JourneyApps’ app platform and became a standalone product in 2022. The self-hosting guide describes running the service as a Docker image, with a Docker Compose stack for local development.

A self-hosted instance is a running deployment of the service. The instance configuration page lists a source database connection, a bucket storage database, client authentication and a sync configuration, all set in a config file.

Worth knowing

The latest release is under the Functional Source License with an Apache 2.0 future license, so it is source-available. An Enterprise Self-Hosted Edition with dedicated support and custom pricing is a separate paid option. The PowerSync Dashboard is not available when self-hosting.

Identity

Status
Active
Maintainer
Journey Mobile, Inc.4
Maintained by
Company
Owned by
JourneyApps9
First release
20229

Rendering and deploy

Runs as
Always on5
Install with
docker7

Releases

Current major version
18
Last release
2026-10-248

Adoption

GitHub stars
3993
Contributors
303

Why these figures do not compare

Sources

  1. 2026-11-03: links, Categories, Databases
    www.powersync.com
  2. 2026-11-03: links
    docs.powersync.com
  3. 2026-11-03: links, Written in, GitHub stars, Contributors
    github.com/powersync-ja/powersync-service
  4. 2026-11-03: License, Maintainer
    github.com/powersync-ja/powersync-service/blob/v1.27.2/LICENSE
  5. 2026-11-03: Databases, Runs as
    docs.powersync.com/configuration/powersync-service/self-hosted-instances
  6. 2026-11-03: Databases
    docs.powersync.com/architecture/powersync-service
  7. 2026-11-03: Install with
    docs.powersync.com/intro/self-hosting
  8. 2026-11-03: Current major version, Last release
    github.com/powersync-ja/powersync-service/releases/tag/v1.27.2
  9. 2026-11-03: First release, Owned by
    www.powersync.com/company
  10. 2026-11-03: links
    www.powersync.com/pricing

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