The Pek Window Manager (pekwm) is a small and
flexible window manager that aims to be usable. It
supports grouping (a concept first introduced by
pwm), automatic properties, chainable keybindings,
and much more.
peksystray is a notification area (system tray)
dockapp. It uses the freedesktop.org protocol,
is similar to GNOME's Notification Area applet,
and works with the pekwm harbour, the Window
Maker dock, and the AfterStep wharf.
PyPanel is a lightweight panel/taskbar written in Python and C for X11 window managers. It can be easily customized to match any desktop theme or taste. It works with WindowMaker and EWMH-compliant WMs (Kahakai, Openbox, FVWM, PekWM, etc).
Hpanel is hacked version of fspanel, a small panel that lists your windows and allows you to switch workspaces. It requires a window manager that is compliant with the NETWM specification. It works nicely with pekwm and aewm++, and handles maximized windows better than fspanel.