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KanidmFusionAuth
Free

Free and open source.

 Freemium

Free Community edition to download, with paid plans and hosted deployments.

Linux, Self-hosted, Command line Web, Self-hosted
  • OAuth2, LDAP and passkeys in a single server
  • Unix integration for Linux logins
  • Can run self-hosted, on-premises or air-gapped
  • Supports SSO, MFA, OAuth2 and OpenID Connect
  • Smaller ecosystem than long-established directory servers
  • Requires running and securing your own server
  • Aimed at developers building apps rather than managing staff accounts
  • Advanced features require paid plans
Self-hosted Self-hosted, Hosted service
Open source Closed source
License not stated License not stated
No account needed Not stated if an account is needed
Not stated if it works offline Works offline

Checked September 23, 2026

Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.