Centrify

Centrify provides unified identity management across data center, cloud and mobile — resulting in one single login for users and one unified identity infrastructure for IT. Centrify's software and cloud services let organizations securely leverage their existing identity infrastructure to centrally manage authentication, access control, privilege management, policy enforcement and compliance across on-premise and cloud resources. More than 5,000 customers have deployed Centrify across millions of servers, workstations, and applications. With Centrify, organizations are reducing their costs associated with identity lifecycle management and compliance by over 50%.

Partner Type 
http://www.centrify.com/cloud/apps/single-sign-on-for-alfresco.asp