LINA

http://openlina.com/

With LINA, a single executable written and compiled for Linux can be run with native look and feel on Windows, Mac OS X, and UNIX operating systems.

＃LINAを紹介している記事
http://radar.oreilly.com/archives/2007/05/beyond_the_brow.html

LINA is a lightweight virtual machine that allows desktop applications to be developed for Linux and run with a native look-and-feel on Windows, Mac OS X, and various flavors of *nix.