Blackbox is Yet Another Window Manager for X11R6 that arose primarily out of the curiosity of the authors. It's small (around 8700 lines at the time of writing), fast, built-in rendering code, image dithering at 8, 15 and 16 bits per pixel and color icon support. Blackbox is [mostly] ICCCM compliant. Homepage: http://linux.wiw.org/blackbox/