Best open-source Firebase alternative

Combined ranking

1. 1
   Supabase—15 pts

   GPT #1Claude #1Gemini #1

   Best overall Firebase replacement: Postgres core, auth, realtime, storage, edge functions, strong hosted product, self-hosting, huge ecosystem, and the clearest production path

   To stay #1 Make self-hosting and multi-region operations simpler and closer to the hosted experience

2. 2
   Appwrite—12 pts

   GPT #2Claude #2Gemini #2

   Broadest Firebase-like open-source suite with auth, databases, storage, functions, realtime, messaging, clean SDKs, and a polished console

   To rank higher Improve database depth, querying, and production scaling confidence versus Supabase

3. 3
   PocketBase—8 pts

   GPT #4Claude #3Gemini #3

   An entire backend (SQLite, auth, realtime, file storage, admin UI) in a single Go binary — unbeatable simplicity, near-zero ops cost, and perfect for side projects, prototypes, and small production apps on one cheap VPS.

   To rank higher A clear horizontal-scaling and HA story (or first-party managed hosting) — the single-node SQLite design caps it for serious multi-server workloads.

4. 4
   Convex—5 pts

   GPT #3Claude #4Gemini —

   Excellent modern developer experience, TypeScript-first backend functions, reactive realtime sync, strong app velocity, and growing open-source/self-host story

   To rank higher Mature self-hosting, portability, and enterprise deployment enough to reduce platform lock-in concerns

5. 5
   Nhost—4 pts

   GPT #5Claude #5Gemini #4

   A specialized GraphQL-first platform utilizing Hasura and Postgres to deliver real-time GraphQL APIs, files, and serverless functions instantly.

   To rank higher Broaden the official client libraries and SDKs beyond Javascript and React to native mobile platforms.

6. 6
   PParse Server—1 pts

   GPT —Claude —Gemini #5

   A mature, highly extensible, and battle-tested framework supporting multiple database engines (MongoDB/Postgres) and complex cloud code options.

   To rank higher Overhaul the aging admin dashboard and reduce configuration boilerplate to appeal to modern developer expectations.

By model

Tracked by ModelsAgree · rank 1 = 5 pts … rank 5 = 1 pt · re-polled continuously