libmetacity-dev 1:2.13.55-0ubuntu1 (amd64 binary) in ubuntu dapper

 Metacity is a small window manager, using gtk2 to do everything.
 .
 As the author says, metacity is a "Boring window manager for the adult in
 you. Many window managers are like Marshmallow Froot Loops; Metacity is
 like Cheerios."
 .
 This package contains the development files.