Supabase

Cloud Hosting · Free · since 2020 · open source

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Supabase is a open-source Firebase alternative with Postgres database, auth, and edge functions. It handles postgres, auth, real-time, and edge functions, and it's best suited for full-stack developers wanting a hosted postgres backend. It has been around since 2020, giving it a 6-year head start in building out integrations and refining the product.

The free plan is free for 2 projects — enough for most people to evaluate whether it fits. Since it's open-source, you can self-host for free with no user limits. It's designed for small teams, striking a balance between simplicity and collaboration features.

pros

Open source and transparent
Includes Postgres as a core feature, purpose-built for cloud hosting workflows
Fully open-source — you can self-host, audit the code, and avoid vendor lock-in
Free for 2 projects — generous enough for most small teams to get real work done

cons

Free plan exists but key features are locked behind the paid upgrade
Fewer built-in features means you may need additional tools to cover gaps
Costs can spike unexpectedly during traffic surges if limits aren't configured
Community support can be slower than the dedicated support teams at commercial alternatives

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