Helpdesk and trouble ticket solutions.

Harvested from a LinkedIn question:

http://bestpractical.com/rt http://ca.com/us/products/product.aspx?ID= http://eventum.mysql.org http://glpi-project.org http://KB.UltraTech-llc.com/?File=HelpDesk.TXT http://manageengine.adventnet.com/products/service-desk-new/index.html http://www.alloy-software.com / http://www.altiris.com http://www.amazon.co.uk/RT-Essentials-J-Vincent/dp/0596006683 http://www.customersoft.com/ http://www.frontrange.com/ProductsSolutions/SubCategory.aspx?id=35&ccid=6 http://www.heatitsm.com http://www.kayako.com http://www.numarasoftware.com/FootPrints.asp http://www.numarasoftware.com/Track-It.asp http://www.ocsinventory-ng.org / http://www.perfecthelpdesk.com/ http://www.service-now.com http://www.symantec.com http://www.webhelpdesk.com http://www.wendia.com