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Open source alternatives to Firebase[005]

Firebase backend-as-a-service: auth, database, storage, functions. Below are 5 self-hostable open source alternatives, ranked by GitHub popularity.

// EDITOR'S TAKE

Supabase is the closest Firebase replacement; PocketBase shines for tiny apps (single Go binary).

// FREQUENTLY ASKED

What is the best open source Firebase alternative?

Supabase is the most popular open source Firebase alternative by GitHub stars (102,057 stars). The other 4 options are ranked above.

Are these Firebase alternatives self-hostable?

Yes — every project listed here is open source and runs on your own infrastructure. Click into a project to see its license, stars, language, and current health status.

Are they free?

All projects shown are free and open source. Check each project's license page for the terms — most are MIT, Apache 2.0, or AGPL.