the open source movement

Replace Firebase.

9 open source alternatives, ranked by health. We re-check every project weekly, so you don’t migrate to something abandoned.

Ranked by health

  1. SupabaseThe Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.★ 111k Apache-2.0 TypeScript self-host managed
  2. PocketBaseOpen Source realtime backend in 1 file★ 61k MIT Go self-host
  3. AppwriteBackend platform for web, mobile and AI apps with auth, databases, storage, functions, messaging, hosting and realtime APIs.★ 58k BSD-3-Clause PHP self-host managed
  4. Parse ServerNode.js backend server providing a data API, user authentication, push notifications, file storage and cloud functions.★ 21k Apache-2.0 JavaScript self-host
  5. InsForgeThe all-in-one, open-source backend platform for agentic coding. InsForge gives your coding agent database, auth, storage, compute, hosting, and AI gateway to ship full-stack apps end-to-end.★ 13k Apache-2.0 TypeScript self-host managed
  6. NhostBackend platform with Postgres, a GraphQL API, authentication, storage and serverless functions.★ 9.3k MIT TypeScript self-host managed
  7. deepstreamRealtime server for data sync, publish-subscribe messaging and remote procedure calls.★ 7.2k MIT TypeScript self-host
  8. TrailBaseSingle-executable application server built on Rust and SQLite with type-safe APIs, realtime subscriptions, auth and admin UI.★ 5.6k OSL-3.0 Rust self-host
  9. ButterbaseOpen-source backend-as-a-service. Postgres, auth, storage, functions, AI gateway, MCP.★ 3.7k Apache-2.0 TypeScript self-host managed
How the ranking works

Health blends commit recency, release cadence, issue throughput, contributor breadth and star growth. Stars are shown but never ranked on. The full method.