Supabase
Postgres with auth, storage, and APIs attached.
An open-source Firebase alternative built on Postgres, providing authentication, file storage, realtime subscriptions, and auto-generated APIs. It's the backend most prompt-to-app builders generate against, so understanding its security model is effectively required reading for anyone shipping a vibe-coded app.
Best for
Adding real accounts and a real database to a vibe-coded frontend.
Watch out for
Row Level Security is the whole ballgame. A table without RLS policies is public data.
Using this and stuck anyway?
Knowing the tool isn't the same as finishing the project. If yours has stopped moving, we'll take a look at it.
Tell us what's broken