Freeware: Itil

ManageEngine ServiceDesk Plus 7.5ManageEngine ServiceDesk Plus is a web based, easy to use Help Desk and Asset Mgmt software whose features include software license tracking, contract mgmt, purchase mgmt&knowledge mgmt functionalities. Itil ready version is also available.

Adventnet ManageEngine ServiceDesk Plus 7.0ManageEngine ServiceDesk Plus is a web based, easy to use Help Desk and Asset Management software which integrates Ticketing, Asset Tracking, Purchasing, Contract Management and Knowledge Base in one low-cost package.

Polar Help Desk Free 4.1Polar Help Desk Free is a web based solution for organizing support department. It is fully functional, commercially free for 1 technician and unlimited number of end users. No trial period expiration, no obligations and no forms to fill out.

FireScope Workbench 3.0FireScope Workbench is a variety of tools designed to make life easier for IT operators. Features Service Modeler with dependency discovery, Service Catalog Builder, User Experience Checker, Ping Sweep&MIB browser/walk. More free tools coming soon.