Single Sign On Server for Windows
apache cookie SSO mechanism.
Apache LDAP Directory Manager
An open source Identity & Access Management solution with AD-functions
Token based authentication module for angular.js
NTLMv2 authentication library and filter for Java
Two-factor authentication system
Proxy Manager that integrates AD with Squid using SSO
Open Source Web Single Sign-On
Single Sign On module for Apache and NGiNX
Deprecated project - see http://wordpress.org/extend/plugins/wpmuldap/