Ory Hydra
OAuth 2 and OpenID Connect server that connects to your own user management through APIs.
Apache-2.0Permissive
SaaS: YesClosed product: Yes
- GitHub stars
- 17.6k
- Deployment
- Docker
- Login/SSO
- OIDC
Open-source alternatives to Auth0
Auth0 in the IT, security & identity category. These are the open alternatives we recommend looking at.
SuperTokens
Sign-in and user management for apps, an alternative to Auth0 and Firebase Auth.
SaaS: YesClosed product: Yes
- GitHub stars
- 15.3k
- Deployment
- Docker
- Login/SSO
- OIDC
Logto
Authentication and authorisation infrastructure for SaaS and AI apps, with SSO and multi-tenancy.
MPL-2.0Weak copyleft
SaaS: YesClosed product: Yes, with conditions
- GitHub stars
- 14.7k
- Deployment
- Docker
- Login/SSO
- OIDC, SAML
Ory Kratos
Headless user management and login with passkeys, social sign-in and two-factor.
Apache-2.0Permissive
SaaS: YesClosed product: Yes
- GitHub stars
- 13.9k
- Deployment
- Docker
- Login/SSO
- OIDC
Pocket ID
Simple OpenID Connect provider where users sign in to your apps with passkeys.
BSD-2-ClausePermissive
SaaS: YesClosed product: Yes
- GitHub stars
- 9.4k
- Deployment
- Docker
- Login/SSO
- OIDC
Authgear
Authentication platform with passkeys, SSO and two-factor for SaaS and mobile apps.
Apache-2.0Permissive
SaaS: YesClosed product: Yes
- GitHub stars
- 2.1k
- Deployment
- Docker
- Login/SSO
- OIDC, SAML
Keycloak
Identity and access management with SSO over OIDC and SAML.
Apache-2.0Permissive
SaaS: YesClosed product: Yes
- GitHub stars
- 37.1k
- Deployment
- Docker, Helm, Operator
- Login/SSO
- OIDC, SAML, LDAP (it is the IdP)
authentik
Flexible identity provider with login and enrollment flows.
SaaS: YesClosed product: Yes
- GitHub stars
- 25.8k
- Deployment
- Docker, Helm
- Login/SSO
- OIDC, SAML, LDAP (it is the IdP)
Zitadel
Identity platform with built-in multi-organisation support. Swiss vendor.
AGPL-3.0Network copyleft (AGPL)
SaaS: Yes, with conditionsClosed product: No
- GitHub stars
- 15.2k
- Deployment
- Docker, Helm
- Login/SSO
- OIDC, SAML (it is the IdP)
Casdoor
Identity and access management with a web UI and support for OAuth, OIDC, SAML and LDAP.
Apache-2.0Permissive
SaaS: YesClosed product: Yes
- GitHub stars
- 14.5k
- Deployment
- Docker
- Login/SSO
- OIDC, SAML, LDAP
This is guidance, not legal advice (inte juridisk rådgivning). Check with a lawyer before deciding.
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