Supabase is a Postgres-first development platform that gives developers a hosted Postgres database combined with built-in services such as authentication, auto-generated REST/GraphQL APIs, realtime subscriptions, edge and database functions, file storage, and a vector/embeddings toolkit. It reuses and integrates enterprise-grade open-source components to provide a Firebase-like developer experience while remaining open source and self-hostable. Supabase offers client libraries (e.g., supabase-js), a dashboard, and local development tooling to speed development of web, mobile, and AI applications that require robust relational data, realtime updates, and semantic search.