Supabase

Open-source Firebase alternative with Postgres, auth, storage, and vector search

free-tier Database & Data Tools database postgres auth realtime vector open-source

Supabase provides a full Postgres database with built-in authentication, instant REST and GraphQL APIs, realtime subscriptions, edge functions, and storage. Supports pgvector for AI embeddings and hybrid search. Open-source with generous free tier and one-click deploy.