Atricore’s JOSSO is an open source and commercially supported Internet Single Sign-On (FSSO) solution for point-and-click and standards-based (SAML2) Internet-scale SSO implementations. For more information contact us at : http://www.josso.org
PHPMyLogin is an secure module based authentication system for LAMP (Linux, Apache, MySQL and PHP). It generate and use Apaches htaccess for authenticating. It is secure, and works like an secure and transparent SSO (single sign on) solution.