OpenID Connect and OAuth 2.0 Framework for ASP.NET Core
Zentyal is a Linux Small Business Server
Web-based LDAP address book browser/editor
Tomcat SPNEGO/Kerberos Authenticator and Active Directory Realm
Single Sign On Server for Windows
Keep track of what you have been doing on the last working day
apache cookie SSO mechanism.
Implementation of XDG Base Directory specification for php
hook pam to authenticate users against anything
Apache LDAP Directory Manager
Facebook authentication strategy for Passport and Node.js.
JNDI DirContext source builder utility
Central Authentication Service (CAS)
Mature LDAP, LDIF and DSML client with i18n support.
Token based authentication module for angular.js
PHP User Login and Management System based on Codeigniter
An extensible authentication and authorization library for Clojure
Two-factor authentication for Node.js
Access Management and Single Signon platform