The open source Firebase alternative. Supabase adds realtime and restful APIs to Postgres without a single line of code.
Cost / License
- Freemium
- Open Source (Apache-2.0)
Application type
Platforms
- Online
- Self-Hosted
United States

Apps similar to SpacetimeDB include Supabase, which is open source with a free version. Other options are Convex Database, BlitzGraph, Typebase and Silk. In total there are five Backend as a Service like SpacetimeDB for the web, self-hosting and Linux.
The open source Firebase alternative. Supabase adds realtime and restful APIs to Postgres without a single line of code.

Convex is the open-source backend for application builders. An all-in-one platform with thoughtful, product-centric APIs.
The AI-native backend. Idea in, API out. Model reality as it is, in graphs. Your agents compose typed JSON queries programmatically. No SQL, no joins, no ORMs.


Write actions, a database schema, and auth as TypeScript files in a typebase/ folder inside your app. Your frontend calls them like local functions, end-to-end typed, zero REST boilerplate.

Silk is the database supercharger – the smart platform that delivers game-changing database performance without changing a thing about your underlying apps or database infrastructure. Your entire stack runs 10x faster.


