Ah yes ... mwm ... Motif window manager
Brings back many memories from work.
mwm is one of many window managers that can be used to create windows and gadgets on the screen.
Quite often in the Unix world, applications are actually hosted on other machines in the network and each user has either his/her own smaller Sun workstation or a pc equipped with an X server such as ReflectionsX or eXceed.
Works quite well if you have a fast network.
IMHO ...
It's what goes on inside those windows that really counts. If you have a good application with a user friendly interface, it doesn't really matter which window manager you wrap around the window.
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redfox