Logto
86 · HealthyAuth and identity service for SaaS and AI apps, built on OIDC with organizations and RBAC.
Open source alternatives to Clerk
4 open source projects replace Clerk, ranked by how safe each is to depend on.
Hanko
84 · HealthyAuthentication server with passkeys, passwords, social login and drop-in web components.
Better Auth
83 · HealthyTypeScript authentication framework with email and social login, passkeys, two-factor, organizations and SSO plugins.
SuperTokens
74 · StableAuthentication backend with prebuilt UI, sessions and multi-tenancy.
At a glance
Health and license are separate verdicts: a project can be well maintained and still not be open source.
| Project | Health | License | Stars |
|---|---|---|---|
| Logto | 86 · Healthy | Free core, paid extrasMPL-2.0 | 15k |
| Hanko | 84 · Healthy | Free, share hosted changesAGPL-3.0 | 9.0k |
| Better Auth | 83 · Healthy | Free to useMIT | 30k |
| SuperTokens | 74 · Stable | Free core, paid extrasApache-2.0 | 15k |
More in Auth & identity
Clerk is a paid auth & identity product. See all open source auth & identity tools, ranked the same way.
Scores last refreshed from GitHub on 9 October 2026. How we score.