Supabase

An open-source Firebase alternative that provides a PostgreSQL database, authentication, storage, and real-time subscriptions, all in one platform with a generous free tier.

Supabase lets non-technical founders and small teams launch production-quality apps without managing servers or databases. The free tier is powerful enough to validate most ideas.

A founder uses Supabase for her SaaS: user auth, storing customer data, and file uploads, zero backend infrastructure to manage, £0/month until she has paying users.