Convex replaces database + API + websockets with one reactive TypeScript backend — queries re-run and push to clients automatically. Vibecoding-friendly: the AI writes one language end to end.
Convex
The reactive backend: database, functions and realtime in TypeScript
convex.dev · Free tier; Pro $25/mo
Capabilities
Capabilities
- Reactive queries (live-updating UI without websocket code), ACID transactions
- TypeScript server functions, file storage, scheduled jobs, vector search
Best for
- Realtime collaborative clones (dashboards, kanban, chat) built fast
- AI-generated codebases: single-language, hard to misuse
Not for
- SQL-portability requirements or existing-Postgres migrations