Both clients and servers can run on NT or Unix platforms interoperably. It has both a GUI and a command line interface. The documentation over sells the GUI usefulness relative to the command line interface in my opinion. There appears to be good multi-user support and reporting features.
Razor is also very customizable.
They provide a library of shell scripts to help in this process. No VMS client is available, but if needed we could probably write our own around the command line interface without too much difficulty. A server is considered a single user. Compared to other products on the market, these prices are reasonable. The web site has complete documentation and a downloadable demo version of the software.