better-auth
The most comprehensive authentication framework for TypeScript
apache
Apache Casbin: an authorization library that supports access control models like ACL, RBAC, ABAC.
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
teamhanko
Modern authentication, on your terms. Open source alternative to Auth0, Clerk, WorkOS, Stytch.
kubernetes-sigs
A tool to use AWS IAM credentials to authenticate to a Kubernetes cluster