Supabase

Supabase is an open-source Firebase alternative that provides a complete backend platform built on PostgreSQL. It offers a hosted Postgres database, authentication, instant APIs, edge functions, real-time subscriptions, and file storage — everything needed to build a backend without writing server code, while keeping the power and flexibility of a real relational database.

Features include a full PostgreSQL database with a visual table editor, auto-generated REST and GraphQL APIs, Row Level Security for fine-grained access control, user authentication with 20+ OAuth providers, real-time data subscriptions via websockets, edge functions written in Deno/TypeScript, file storage with CDN, vector embeddings for AI applications, database branching for development workflows, and client libraries for JavaScript, Flutter, Python, and more.

Supabase is ideal for developers and startups who want the speed of a Backend-as-a-Service without being locked into proprietary technology. Its PostgreSQL foundation means your data is always portable, while features like Row Level Security and edge functions provide production-grade security and extensibility. It has become the preferred backend for indie hackers, SaaS builders, and teams who value open-source infrastructure.