guile-gtk
- Guile bindings for Gtk+ and GNOME.
- http://www.gnu.org/software/guile-gtk/

PyGTK
- Python bindings for the GTK Widget Set, as well as GNOME widgets.
- http://www.daa.com.au/~james/software/pygtk/

Bakery
- A C++ Framework for creating GTK+ or GNOME applications using gtkmm and gnomemm.
- http://bakery.sourceforge.net/

Gnocl
- A GTK+/GNOME extension for Tcl, loosely modeled after the way Tcl interfaces with Tk.
- http://www.dr-baum.net/gnocl/

GnomeHaskell
- Haskell Gnome and ORBit effort and bindings
- http://www.cse.unsw.edu.au/~chak/haskell/gnome/

gtkmm
- C++ interfaces and bindings for GTK+ and Gnome.
- http://gtkmm.sourceforge.net/

gnome-objc
- CVS home of Objective-C bindings for Gtk+, GNOME.
- http://cvs.gnome.org/bonsai/rview.cgi?cvsroot=/cvs/gnome&dir=gnome-objc

Java-Gnome
- Java GTK+ and Gnome bindings using JNI
- http://java-gnome.sourceforge.net/

Gnome-GCJ
- Java GTK+ and Gnome bindings using CNI.
- http://gnome-gcj.sourceforge.net/