HelpTrac is a comprehensive help desk application scalable for small and large organizations. It is a modular product, allowing you to tailor the system to fit your needs. It handles all the standard functionality you would expect from a help desk application (tickets, equipment, vendor information, users) as well as adding additional functionality (full e-mail capabilities, scheduling, and billing).
||Free to try
||Windows 98/Me/NT/2000/XP/2003 Server