Central Authentication Service (CAS)
Active Directory Keytab Management
Use LDAP as the central store for your network
PHP User Login and Management System based on Codeigniter
Token-based AngularJS authentication
Identity4J is a suite of Java Identity and Authentication Connectors
Project moved to github: https://github.com/pam-pgsql/pam-pgsql
Open Source Web Single Sign-On
Applications and shared infrastructure for humanities research.
Single Sign On module for Apache and NGiNX
User ping
Deprecated project - see http://wordpress.org/extend/plugins/wpmuldap/