NRT Online for Help Desk is a hosted (on-demand) help desk solution using the leading help desk software NetResults Tracker, for customers who wish to outsource the system administration of their Help Desk system. 

NetResults installs and maintains the hardware, network infrastructure, web server, database server, and NetResults Tracker software, so that you can focus on your core business. "NRT Online for Help Desk" is a complete solution that greatly reduces the startup costs, deployment time, and overall cost of ownership.  

All you need is a web browser.  There is no software to install on your side.