Backend and Auth

Drop-in authentication and user management for React and Next.js, with prebuilt components for sign-in, sessions, and organizations. Popular in AI-generated codebases because it removes the hand-rolled auth that scanners most often flag as broken.

Best for

Next.js apps that want production auth without building it

Category

Backend and Auth

Google's app platform with Firestore, Realtime Database, auth, and hosting. A long-standing target of misconfiguration research: security rules left in test mode expose entire databases, the same failure class Supabase RLS misconfiguration produces in newer stacks.

Best for

Mobile-first and Google-ecosystem apps

Category

Backend and Auth

Serverless Postgres with branching and scale-to-zero, increasingly the default database on Vercel and inside AI builder stacks. Plain Postgres semantics mean no client-exposed API by default, which removes one failure mode Supabase-style stacks have to configure away.

Best for

Serverless Postgres for Vercel and Next.js apps

Category

Backend and Auth

Open-source Postgres backend with auth, storage, and auto-generated APIs. The default database behind Lovable and much of the vibe-coding ecosystem. Its row-level security model is powerful but off by default on new tables, which is the single most common root cause behind publicly readable data in shipped vibe-coded apps.

Best for

Postgres-backed apps that need auth and instant APIs

Category

Backend and Auth