2 SaaS tools · 7 OSS alternatives · 449,695★ combined
Self-hosting backend-as-a-service pays off when your team has the operational bandwidth and your usage justifies the engineering time. Below are the 2 backend-as-a-service SaaS tracked in our database, each with curated OSS alternatives and migration notes. Read the comparison notes on individual SaaS pages — they call out the specific feature gaps you'll hit when switching.
Firebase is Google's Backend-as-a-Service platform providing Firestore (NoSQL database), Authentication, Storage, Cloud Functions, Hosting, and Realtime Database for web and mobile apps. Developers use it to build and deploy full-stack applications without managing server infrastructure. Its tight Google ecosystem integration (Google Sign-In, Analytics, Crashlytics) is a primary driver for adoption.
Supabase is a backend-as-a-service platform wrapping PostgreSQL with auto-generated REST and GraphQL APIs, real-time subscriptions, authentication, edge functions, and file storage.
7 OSS projects across 2 SaaS tools, with a combined 449,695★ on GitHub. Each SaaS page links its top 3 alternatives with stars, language, license, and migration tips.
Maturity varies. We sort alternatives by GitHub stars on each SaaS page, but stars are a community-size signal, not a quality signal. Always check the last-pushed date and recent issue activity before depending on a project — a 50,000★ repo with no commits in 18 months is a red flag.
The migration tips are AI-generated summaries based on the OSS project's documentation and known SaaS export formats. They cover the predictable gotchas (data shape, API differences, authentication) but they are not a substitute for a proper migration runbook. Treat them as a checklist starting point, not a complete plan.