A transaction-based SCM system, providing a framework for a team of developers to work on changes to a program independently, and then integrating these changes back into the master source. Open Source.
The WANdisco SCM suite comprises of multi-site SCM solutions for CVS, CVSNT, and Subversion. It aims to allow a development team to be spread-out across the world and work as one unit.
Software products for IT service management solutions, including FootPrints and Track-It for tracking requests, automating work flows and supporting users and customers.
Surround SCM, by Seapine Software, is a cross-platform solution with client and server support on Microsoft Windows, Linux, Solaris, and Mac OS X operating systems. (commercial)
A Software Configuration Management (SMC) tool for the HP NonStop Platform. PrimeCode/RMS manages changes to software applications through the entire software life cycle.
CIG specializes in change management and systems integration solutions that allow companies to standardize configuration management throughout the enterprise. Use CA-Endevor or IBM's SCLM enterprise-wide.