From Waimea website:
Waimea is a highly customizable window manager for the X Window system conforming to the latest EWMH specification. Waimea supports multiple virtual desktops and by using the cairo graphics library for all rendering, waimea provides a modern vector-based style engine that takes advantage of display hardware acceleration when available (through the X Render Extension).
The screenshots are clean and simply beautiful. I’ll update my freedesktop CVS copy, recompile and test this WM. Until Aegis reaches some usable state ;-)