The Motif Window Manager, mwm, is very popular and almost standard for many applications and manufactures. It has a pleasant 3-D look, is easy on the eyes, is relatively simple to use, and works rather similarly to MS Windows by Microsoft. The twm window manager is our alternative choice. It is not as pretty as Motif, yet is faster and better met our needs for closure; the speed is important if you are a power user with many open windows.
The Motif Window Manager is part of the Motif Graphic User Interface (GUI). Motif itself is a tool kit which follows the standard style for X applications adopted by the Open Software Foundation (OSF). This standardization is helpful to you since the menus, scroll bars, buttons, and extras will be much the same for different applications, so you don't have to learn new ones all the time. As more applications get written using the Motif GUI, the entire X Windows System should become more uniform and easier to use. At present we find an uneven adherence to the standards in applications, yet with enough similarity to still be effective.