Faronics Power Save
www.faronics.com/
Power Save for Windows and Mac Desktops - a computer energy management solution that analyzes CPU, disk, keyboard, mouse, and application activity before taking power management actions.

Faronics Whitepaper, April 8, 2008
www.faronics.com/
"Reducing Desktop Power Consumption: How IT and Facilities Can Both Win"

Verdiem – Surveyor
www.verdiem.com/
With SURVEYOR, organizations are able to manage, measure and reduce their energy consumption on PC networks.  SURVEYOR works by intelligently placing PCs into lower power settings when not in use. The software employs a centralized control and management approach to controlling the power settings residing within each networked computer.
Verdiem