better-auth
The most comprehensive authentication framework for TypeScript
nextauthjs
Authentication for the Web.
goauthentik
The authentication glue you need.
apache
Apache Casbin: an authorization library that supports access control models like ACL, RBAC, ABAC.
ory
Internet-scale OpenID Certified™ OpenID Connect and OAuth2.1 provider that integrates with your user management through headless APIs. Solve OIDC/OAuth2 user cases over night. Consume as a service on Ory Network or self-host. Trusted by OpenAI and many others for scale and security. Written in Go.
zitadel
ZITADEL - Identity infrastructure, simplified for you.
casdoor
An open-source AI-first Identity and Access Management (IAM) /AI MCP & agent gateway and auth server with web UI supporting MCP, A2A, OAuth 2.1, OIDC, SAML, CAS, LDAP, SCIM, WebAuthn, TOTP, MFA, Face ID, Google Workspace, Azure AD
tinyauthapp
The tiniest authentication and authorization server you have ever seen.
oauthlib
A generic, spec-compliant, thorough implementation of the OAuth request-signing logic
DefGuard
Zero-Trust access management with true WireGuard® 2FA/MFA
ory
Streamline your web application's authentication with Polis, an SSO service supporting SAML and OpenID Connect protocols. Beyond enterprise-grade Single Sign-On, it also supports Directory Sync via the SCIM 2.0 protocol for automatic user and group provisioning/de-provisioning.