Apereo CAS - Enterprise Single Sign On for all earthlings and beyond.

OpenID Connect Identity (OIDC) and OAuth 2.0 Provider with Pluggable Connectors

🔐 Node.js API for Single Sign On (SAML 2.0)

Simple SAML Identity Provider (IdP) for Node

Serverless Authentication as a Service (AaaS) provider built on top of AWS Cognito

Ruby SAML Identity Provider, best used with Rails (though not required)

一账通是一款开源的统一身份认证授权管理解决方案，支持多种标准协议(LDAP, OAuth2, SAML, OpenID)，细粒度权限控制，完整的WEB管理功能，钉钉、企业微信集成等

This is a MongoDB provider for the ASP.NET Core 2 Identity framework

Lightweight SAML Identity Provider

Mountable Rails engine that provides OpenID server/identity provider functionality

Building blocks for servers implementing Simple Cloud Identity Management v2

Projeto Login Cidadão

ASP.NET Core Identity Provider for NHibernate

A trivially simple stack to create an AWS IAM SAML provider via CloudFormation

Get up and running quickly with Okta's OAuth as a Service and your favorite API Gateway.

IdentityServer 4 implementation acting as SAML 2.0 IdP and SP

Finally manage to sync GSuite account with azure active directory!!!

Spring Boot OAuth 2.0 & OpenID Connect Identity Provider / Authorization Server

simpleSAMLphp module that turns Drupal site into IdP(Identity Provider)

RavenDB user/role persistent store for ASP.NET Core identity provider

OpenShift Management Playbooks

A highly configurable yet simple to use TOTP based two-factor authentication processing module for SimpleSAMLphp.

JWT based identity provider written with Laravel Framework

The principal repository of Unity IdM service - versatile identity and authentication platform

Symfony bundle that provide a SAML Identity Provider (idp).

Oauth2 authentication plugin for StackStorm Community edition

Highly available, scalable and extendible Identity Provider

Django SAML2 IdP PoC