Best Self-Hosted Alternatives to Firebase
Firebase makes shipping an app fast — realtime data, auth, and hosting with almost no backend code — until usage-based pricing on reads, writes, and bandwidth turns a growing app into a growing bill. The self-hosted backends below cover the same ground — auth, a data API, storage, realtime — on a server you size once and pay for flat.
Firebase costs about $300/year and keeps your data on its servers. These researched, open-source alternatives give you the same workflow on hardware you own — here's what each needs to run.
The alternatives
What you give up by leaving Firebase
Leaving Firebase means giving up a genuinely managed realtime database that scales without you thinking about it, a generous free tier that makes prototyping free, deep integration with the rest of Google's ecosystem (Cloud Functions, Analytics, Auth providers), and true zero-ops infrastructure with a global edge under it. Self-hosting — whether Postgres-native like Supabase, Hasura-backed like Nhost, or single-binary like PocketBase — trades that for a bill that stops tracking usage and data you fully control, at the cost of becoming the team that runs backups, patches containers, and sizes the box. It's a strong trade once usage-based pricing bites; it's more operational commitment than a side project may want on day one.
Common questions
Are these Firebase alternatives really free?
The software is open-source and free to run. Your only cost is the server it runs on — often a few dollars a month, less than most SaaS subscriptions.
How much server do I need to self-host one?
Most of these run comfortably on a small VPS — 1–2 GB of RAM is enough for a single-user or small-team setup. Each app's page lists its minimum RAM.
Will I lose features by leaving Firebase?
It depends on the app. The alternatives below cover the core workflow; polish and integrations vary, so check each one's stack and difficulty before you commit.