Self-hostable authentication server covering passwordless login, passkeys, MFA, SSO and social login, with a pre-built login UI and admin portal.
2.1K130GoApache-2.0Updated yesterday
1 alternative
Best open-source alternatives to Firebase Auth (2026)
Looking for a free, open-source alternative to Firebase Auth? These 1 projects can replace it. Each one passed our quality screening and is explained in plain words, so you can compare stars, license and maintenance at a glance.
Quick comparison
| Project | Stars | License | Last commit |
|---|---|---|---|
| authgear/authgear-server | ★ 2.1K | Apache-2.0 | yesterday |
FAQ
- Is there a free, open-source alternative to Firebase Auth?
- Yes. The most popular open-source alternatives to Firebase Auth on Repolode are authgear-server.
- Which Firebase Auth alternative should I choose?
- authgear-server has the most GitHub stars and is released under Apache-2.0. Compare the license and last commit of each option in the table above before choosing.