Single Sign On

KeycloakJava

Open source identity and access management solution for modern applications with single sign-on, user federation, and fine-grained authorization.

AutheliaGo

An open-source authentication and authorization server providing two-factor authentication and single sign-on (SSO) for web applications.

Ory HydraGo

OpenID Certified OAuth 2.0 and OpenID Connect server optimized for low-latency, high throughput, and cloud-native deployments.

ZitadelGo

An open-source identity and access management platform with multi-tenancy, SSO, MFA, and API-first design for developers.

CasdoorGo

An open-source AI-first Identity and Access Management (IAM) platform with web UI, supporting OAuth, OIDC, SAML, LDAP, MFA, and AI agent integration.

DexGo

A federated OpenID Connect (OIDC) and OAuth 2.0 provider with pluggable connectors to external identity sources.

DexGo

A federated OpenID Connect (OIDC) identity and OAuth 2.0 provider with pluggable connectors for LDAP, SAML, GitHub, and more.

OmniAuthRuby

A Rack-based Ruby library that standardizes multi-provider authentication for web applications.

msal-angularTypeScript

A JavaScript library for authenticating users and acquiring tokens to access Microsoft Cloud services using Microsoft Entra ID.

node-oidc-providerJavaScript

OpenID Certified OAuth 2.0 Authorization Server implementation for Node.js with extensive spec support.

loginsrvGo

A standalone JWT login microservice with pluggable backends including OAuth2, htpasswd, and OSIAM.

oidcGo

An OpenID Foundation-certified OpenID Connect client and server library for Go, designed for ease of use.

AuthgearGo

An open-source authentication platform offering passkeys, SSO, MFA, and passwordless login, available for self-hosting or cloud.

omniauth-google-oauth2Ruby

An OmniAuth strategy for Google OAuth2 authentication in Ruby applications.