I found this cool new Workstation software yesterday. http://www.clearcanvas.ca/ It is still pretty new and is only a beta release, but it shows some real promise. I am very interested to see where the project goes from here. The system provides the standard features any viewer has. It is very simple to setup and configure, but it is however very resource intensive. I think Clear Canvas has a bright future ahead of it, but for now it is still a bit buggy.