1)   LBE Web Helpdesk 4.0.139
Help Desk software designed to be operated via your web browser. Use it on the Internet, an Intranet or even run it locally on a stand-alone machine.Features:Operator and end-user access. Automatic escalation. Email notification. etc

 2)   TaskPool 2.4
TaskPool is an advanced, powerful and feature rich Task Management system, for communication with customers (Help desk), with partners (outsourcing), and bug tracking (development)