Firebase Auth alternative
The Firebase Auth alternative for SaaS teams
Authagonal gives you enterprise SSO, SCIM, MFA, audit logs and branded login — every feature on every plan, with no per-connection fees.
Why teams move off Firebase Auth
- 01
Enterprise SSO (SAML/OIDC) only appears if you upgrade to the paid Identity Platform tier, and there is still no SCIM for selling to businesses.
- 02
Multi-tenancy and audit logs also sit behind the paid Identity Platform tier, and even then multi-tenancy is auth-layer only and branding stays basic.
- 03
Ties you to the Google and Firebase ecosystem rather than a portable, standards-first identity layer.
Firebase Auth vs Authagonal
| Firebase Auth | Authagonal | |
|---|---|---|
| Enterprise SSO | Paid Identity Platform tier only | Unlimited connections, included |
| SCIM provisioning | Not provided | Included on every plan |
| B2B multi-tenant | Paid tier, auth-layer only | Per-tenant by design |
| Audit & branding | Audit on the paid tier; branding basic | Audit logs + branded login, included |
| Self-host option | None | Open-source core, self-hostable |
Not sure where your auth stands? Take the free 2-minute enterprise-readiness check.
Common questions
- Is Authagonal cheaper than Firebase Auth?
- Usually, yes. Authagonal includes enterprise SSO, SAML, SCIM, MFA, custom domains and audit logs on every plan from $29/mo, with no per-connection or per-client fees. Firebase Auth charges for those as you scale, so the gap widens with every enterprise customer and every app you add.
- Can I migrate from Firebase Auth to Authagonal?
- Yes. Authagonal imports your users and connections and keeps the same OIDC and SAML standards, so most migrations are a configuration change, not a rebuild.
- Does Authagonal support SAML and SCIM like Firebase Auth?
- Yes, on every plan including the free tier. SSO connections aren't capped and SCIM directory sync is included, so you're never billed per connection to onboard an enterprise customer.
Ready to switch?
Start free, no card required. Every feature is included from day one.