Glade is a RAD tool to enable quick & easy development of user
interfaces for the Gtk+ toolkit and the GNOME desktop environment. The
user interfaces designed in Glade are stored in XML format, enabling
easy integration with external tools. In particular libglade can load
the XML files and create the interfaces at runtime. The DTD for the XML
files is included with libglade, and is also at
http://glade.gnome.org/glade-2.0.dtd. Other tools are available which
can turn the XML files into source code in languages such as C++, Perl
and Python.