Supabase

Supabase is an open-source backend-as-a-service that gives developers a full backend in minutes, built on trusted PostgreSQL. Instead of stitching together separate services, teams get a managed Postgres database with instant auto-generated REST and GraphQL APIs, authentication with row-level security, file storage, edge functions, and realtime subscriptions — all from one platform. Because it's standard Postgres underneath, there's no proprietary lock-in and the full SQL ecosystem is available. Positioned as an open-source Firebase alternative, Supabase is developer-first and fast to adopt. Authentication supports email, magic links, and social/OAuth providers with fine-grained row-level security policies; the storage layer handles files with access rules; realtime streams database changes to clients; and edge functions run serverless logic close to users. A polished dashboard, CLI, client libraries, and now AI/vector features (pgvector) for building AI apps round out the experience, and the whole stack can be self-hosted. Supabase serves indie developers, startups, and increasingly larger teams building web and mobile apps, with security, SSO, backups, and a HIPAA add-on at higher tiers. Pricing is per organization with usage-based overages: a free tier (with projects that pause after inactivity), a Pro plan around $25/month, a Team plan around $599/month for org controls, and custom Enterprise. It competes with Firebase, AWS Amplify, Appwrite, and PlanetScale, differentiating on open-source Postgres, developer experience, and no lock-in.