I make a wmi port for NetBSD (http://www.phear.org/~alnix/wmi/).

Officiel web page: http://wmi.berlios.de

Features of WMI
               
    * no dependencies except Xlib and C++ STL
    * multihead support                      
    * virtual workspaces
    * tabbed/tiled frames
    * floating clients   
    * vi-alike input mode
    * full keyboard control
    * fully customizable (key) bindings
    * sequential action mappings       
    * mouse support             
    * session management
    * mini pager for statusbar
    * remote tool (status text and action invocation)
    * theme support