OpenSoft

Open source Auth & identity

Login, single sign-on, user management and identity providers. Ranked by health score.

Keycloak

96 · Healthy

Identity and access management server with SSO, OIDC, SAML and user federation (CNCF).

Free to useApache-2.0★ 37kLast commit today

authentik

91 · Healthy

Identity provider with flows, SSO across OIDC, SAML, LDAP and a proxy outpost.

Free core, paid extrasMIT★ 26kLast commit today

Logto

86 · Healthy

Auth and identity service for SaaS and AI apps, built on OIDC with organizations and RBAC.

Free core, paid extrasMPL-2.0★ 15kLast commit yesterday

ZITADEL

84 · Healthy

Multi-tenant identity platform with event-sourced audit trail and B2B organizations.

Free, share hosted changesAGPL-3.0Relicensed 2025★ 15kLast commit 2 days ago

Hanko

84 · Healthy

Authentication server with passkeys, passwords, social login and drop-in web components.

Free, share hosted changesAGPL-3.0★ 9.0kLast commit 3 days ago

Better Auth

83 · Healthy

TypeScript authentication framework with email and social login, passkeys, two-factor, organizations and SSO plugins.

Free to useMIT★ 30kLast commit today

Ory Kratos

78 · Stable

Headless identity and user-management server with an API-first design.

Free to useApache-2.0★ 14kLast commit 2 months ago

Pocket ID

78 · Stable

Lightweight OpenID Connect provider that signs users in to your apps with passkeys only.

Free to useBSD-2-Clause★ 9.5kLast commit yesterday

SuperTokens

74 · Stable

Authentication backend with prebuilt UI, sessions and multi-tenancy.

Free core, paid extrasApache-2.0★ 15kLast commit 7 days ago

Authelia

71 · Stable

Single sign-on and two-factor portal that sits in front of web apps via a reverse proxy.

Free to useApache-2.0★ 29kLast commit yesterday

At a glance

Health and license are separate verdicts: a project can be well maintained and still not be open source.

ProjectHealthLicenseStarsLast commit
Keycloak96 · HealthyFree to useApache-2.037ktoday
authentik91 · HealthyFree core, paid extrasMIT26ktoday
Logto86 · HealthyFree core, paid extrasMPL-2.015kyesterday
ZITADEL84 · HealthyFree, share hosted changesAGPL-3.0Relicensed 202515k2 days ago
Hanko84 · HealthyFree, share hosted changesAGPL-3.09.0k3 days ago
Better Auth83 · HealthyFree to useMIT30ktoday
Ory Kratos78 · StableFree to useApache-2.014k2 months ago
Pocket ID78 · StableFree to useBSD-2-Clause9.5kyesterday
SuperTokens74 · StableFree core, paid extrasApache-2.015k7 days ago
Authelia71 · StableFree to useApache-2.029kyesterday

Paid products these replace

Alternatives to Amazon CognitoAlternatives to Auth0Alternatives to ClerkAlternatives to OktaAlternatives to StytchAlternatives to WorkOS

Scores last refreshed from GitHub on 9 October 2026. How we score.