PocketBase — #2 Alternative to Firebase
Open-source backend in 1 single Go binary with embedded SQLite, Auth, and Realtime
Compiles database (SQLite in WAL mode), SSE realtime subscriptions, file S3 storage, OAuth2 auth, and a crisp admin UI into a single 15 MB executable handling 10,000+ concurrent connections.
License: MIT · Pricing: Free & Open Source · Compare all Firebase alternatives · Official Website