Open source alternatives to Firebase

3 free tools that do the job of Firebase, most stars first. All are web apps you can run on your own server.

JobBackend and auth

3 alternatives

Sorted by most stars.

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Supabase

A Postgres backend with authentication, file storage, realtime and an instant API.

Web app

Stars
114,476

Updated
6 days ago

License
Apache-2.0
Appwrite

A backend platform with auth, databases, storage and functions for web and mobile apps.

Web app

Stars
57,856

Updated
6 days ago

License
BSD-3-Clause
Nhost

A backend with Postgres, GraphQL, auth and storage.

Web app

Stars
9,375

Updated
6 days ago

License
MIT

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About these numbers. Stars, dates and licenses come from GitHub through ecosyste.ms, collected on 10 Nov 2026; they can lag GitHub by a few days. A project is listed only if it has 300 or more stars, was updated in the last 12 months and states a license. A listing is not an endorsement, and we have not tested these tools on Antideploy yet. Logos belong to their projects and companies and are shown only to say which is which.

Supabase

Appwrite

Nhost