When comparing XFWM vs Window Maker, the Slant community recommends XFWM for most people. In the question“What are the best window managers for Linux?” XFWM is ranked 12th while Window Maker is ranked 17th.
Ranked in these QuestionsQuestion Ranking
Pro Can choose to open windows at center of screen or edge
Pro Integrated compositing manager
XFWM has an integrated compositing manager, though it does have screen tearing.
Pro Left-half/Right-half window snapping
XFWM has a built-in option for window snapping.
Pro Great and beautiful theme support
It's very easy to create themes.
Pro Lightweight and desktop independent
Pro It's unique
Different from any other WM which makes it a lot of fun to use.
Pro Lightweight and elegant
Window Maker is a very lightweight and elegant desktop with a dock for windows handling.
Pro Rare, retro feel
The look of Windows Maker is reminiscent of NeXT's GUI and should be appreciated by those who enjoyed it for its retro feel.
Pro Extensible with dockapps
Dockapps are available to extend the functionality of Window Maker.
Pro Actively developed
Window Maker is in active development. New features are added and bugs are bashed on a continuous basis.
Con Composite manager has screen tearing
The included composite manager in XFWM has screen tearing.
It should be mentioned that there's a workaround though:
compton --backend xrender --vsync opengl