Compare software

Ory KratosFusionAuth
Free

Free to self-host; Ory also sells a hosted version through Ory Network.

 Freemium

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

Self-hosted Web, Self-hosted
  • Supports passkeys, social sign-in, OIDC, SAML and TOTP
  • API-first design leaves the login UI fully under your control
  • Can run self-hosted, on-premises or air-gapped
  • Supports SSO, MFA, OAuth2 and OpenID Connect
  • Headless, so you must build or adopt your own login pages
  • Aimed at developers rather than end users
  • 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
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Works offline

Checked October 1, 2026

Checked September 24, 2026

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