Giram is a powerful modeller for Povray which uses Gtk. Although at early development stage, it is in a usable form. The sources are available from Giram home page . Remember to read the compiling software page first.
Installation is straightforward.
It is recommanded to install Gnome and Mesa. Screenshots Click on the images for larger versions. Here is a sample session. Here is a lathe object created with Giram. Here are some giram dialog boxes.