Authorizer
Identity & SSOOpen-source auth solution with a ready-made UI
Replaces Auth0, Firebase Authentication
1 self-hosted Firebase Authentication alternatives
Firebase Authentication is a popular proprietary tool in the identity & sso space. These open-source apps let you replace Firebase Authentication with software you host and control yourself.
Best self-hosted Firebase Authentication alternatives
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Switching from Firebase Authentication
Moving off Firebase Authentication means trading a managed subscription for a service you run yourself. The payoff is ownership: no per-seat pricing, no vendor lock-in, and full control of your data. Start with the option above that matches your setup-difficulty comfort level — every app links to a detailed specs page and head-to-head comparisons.