yeahwm (yet another h* window manager) is a minimalist window manager based on evilwm. It supports Xinerama and respects aspect size hints (useful with Mplayer and tvtime). It features creative usage of the mouse, tabbed titles that can be repositioned (BeOS-like), and good keyboard control.
WMixer is a complete OSS mixer solution in dockapp form factor. All channels are supported, stereo channels balance can be adjusted, and main recording source can be set. Volume can also be adjusted using the mousewheel on newer mice, the mixer automatically updates if another program changes mixer channels, and it uses very little CPU time. There is also an "On-Screen-Display" feature to visualize current volume using a TV-like volume bar.
Tom's Virtual Tab Window Manager (tvtwm) is a superset of the X11R5 release of twm, initially written by Tom LaStrange. The major benefit of tvtwm over twm is the "Virtual Desktop". This allows you do define a substitute root window that is larger than your display area. This new virtual root window is the parent for all of your X clients. tvtwm provides a "Panner" which will let you see a scaled down representation of the whole virtual desktop. Using this panner and keys bound to functions added to tvtwm, you can move around this desktop while having your physical display showing only part of the whole desktop.