Glade is a GUI builder for GTK+ and GNOME. It stores projects in an XML format and can generate C code from this meta-format. Additionally, the meta-format can be converted to other languages via modules. For example, glade-- can generate C++ code.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
Crashes when the selection changed as a result of a
commit were resolved. GtkButton (correctly) only accepts real stock items and not icons. Hard-coded size requests to palette were removed. Atk proxy objects always have unique names. A buggy query dialog was removed from notebook creation. Documentation on integrating Python widgets was added.