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Ory KratosLogto
Free

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

 Freemium

Open source to self-host; the cloud service is free up to 50K monthly active users, then…

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
  • Supports OIDC, OAuth 2.1 and SAML
  • Multi-tenancy, enterprise SSO and RBAC built in
  • Headless, so you must build or adopt your own login pages
  • Aimed at developers rather than end users
  • Aimed at developers integrating auth into apps
  • Cloud usage beyond the free tier is billed
Self-hosted Self-hosted, Hosted service
Open source Open source
License not stated License: MPL-2.0
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked October 1, 2026

Checked October 1, 2026

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