WMScript is a system monitoring dock app for Window Maker. It allows you to specify a command and have the numeric result of that command displayed in the dock app's window. You may specify up to 5 things to monitor and the interval is configurable. This combines to make it a very flexible tool for system monitoring. It is based on WMiNet, and the look is the same.
PLWM (The Pointless Window Manager) is a highly modularised window manager written in Python. It has no configuration files; instead, you combine Python classes to make the perfect window manager for yourself. This is not a window manager for non-programmers. The feature list includes point-to-focus and sloppy-focus, outline move, resizing, deiconifying, views (extremely powerful workspaces), and multihead support. PLWM is controlled completely from the keyboard.