cells-gtk is a GTK+ based toolkit that enables a declarative-style description of a GUI. It provides a demo that uses all of the GTK widgets that it implements.

Homepage: http://common-lisp.net/project/cells-gtk/

License: LLGPL

Version 3 from cvs:

cvs -z3 -d :pserver:anonymous:anonymous@common-lisp.net:/project/cells-gtk/cvsroot co cells-gtk3

There is a fork of version 3 on github (tarball) updated to follow current versions of dependencies as of June 2009.

GTK binding