Supabase

Supabase is an open-source Backend-as-a-Service (BaaS) platform that provides a scalable and developer-friendly alternative to Firebase. Built on top of PostgreSQL, Supabase offers real-time database updates, authentication, file storage, and auto-generated APIs. It enables developers to quickly build and deploy applications without managing backend infrastructure, while maintaining full control over their data.

Website: supabase.com