Acacia Help Desk Features include Win32 administrator client, knowledge management, call tracking, email functionality, and system reporting.
http://www.helpdesksoftware.com.au/ More Info
AmberCat Web-based and desktop software for internal and external help desks, customer service, and facilities management.
http://ambercat.com/index.htm More Info
Control-F1 Provides enterprise solutions for live and automated support.
http://www.ca.com/control-f1/ More Info