If you are looking for Web based help desk software then take a look at NeuQs. Not only to does it provide a help desk that is web based but it also uses Microsoft Silverlight. The advantages of using Silverlight are:
- Client runs in your browser jusr like a locally installed application
- Streamlined interface without the "Postback" effects of a traditional web based application
- Low bandwidth requiremented to allow remote users a simple and effective interface
NeuQs helpdesk is available in two versions either the download version that you install on your own infrastructure or a cloud based version that is powered by Microsoft Azure.
Web Help Desk Software