Qdrant
Open source vector database
Qdrant is an open source vector search engine written in Rust. You can self-host it or use the managed Qdrant Cloud. It has a free cloud tier.
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Supabase
Backends for AI apps
Postgres backend that many AI builders use
Appwrite
Backends for AI apps
Open source backend platform
Better Auth
Backends for AI apps
Open source auth library for TypeScript
Clerk
Backends for AI apps
Authentication and user management
Convex
Backends for AI apps
Reactive backend with TypeScript functions
Firebase
Backends for AI apps
Google's app backend platform