Supabase

Supabase is an open-source backend-as-a-service platform built on PostgreSQL that provides a database, authentication, file storage, edge functions, real-time subscriptions, and vector embeddings in a unified developer experience. It positions itself as an open-source alternative to Firebase with the power and flexibility of a full relational database. The platform generates instant REST and GraphQL APIs from your database schema, eliminating the need to build backend CRUD endpoints manually. Row-level security policies defined in PostgreSQL control data access, allowing fine-grained authorization rules that are enforced at the database level regardless of which API or client accesses the data. The AI SQL editor lets developers write database queries by describing what they need in natural language, which is particularly helpful for complex joins, aggregations, and window functions. Authentication supports over 20 social providers including Google, GitHub, Apple, and Discord, along with email/password, magic links, and phone authentication. The real-time engine pushes database changes to connected clients via WebSockets, enabling features like live dashboards, collaborative editing, and chat applications. Supabase has become an important part of the AI app development ecosystem. No-code and low-code platforms like Lovable, Bolt, and v0 use Supabase as their default backend, meaning applications generated by these tools often come pre-configured with Supabase. Edge functions provide serverless compute at the network edge, and the vector extension (pgvector) supports AI embedding storage and similarity search directly within PostgreSQL, enabling RAG applications without a separate vector database. Supabase is best suited for developers and teams building web and mobile applications who want a managed backend without giving up the power of SQL and PostgreSQL. It is particularly popular with indie developers, startups, and teams using AI code generation tools. Organizations requiring NoSQL databases or those with workloads better served by document databases may find PostgreSQL limiting. The free tier includes two projects with generous limits on database size, bandwidth, and API calls, though inactive projects are paused after one week of inactivity. The Pro plan starts at $25 per month per project and removes pausing restrictions while adding higher limits and daily backups. Team and Enterprise plans provide production-grade features including point-in-time recovery, SLA guarantees, and priority support.