All alternatives to Keycloak
lightweight-auth-server
> Most auth servers demand more RAM than your actual app - Keycloak at 512MB, Authentik at 735MB. OVTL is a self-hosted OAuth2 + OIDC server written in Rust that idles at ~20MB, giving you multi-tenant isolation, zero-knowledge encryption, MFA, Passkeys and social login in a single binary that runs...
Free CLI API Authentication For Backend Developers
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