Echinus is a lightweight window manager for X based on dwm's source code. It
manages windows in tiled, maximized, and floating layouts. It is extremely
small, rather fast, and supports Xft. It features nice titlebars, multiple
desktops, theming support, a simple configuration file, the ability to switch
desktops with the mouse wheel, X bitmaps for title buttons, and true
transparency support (through xcompmgr). There is no need to recompile or
restart X to change its configuration.