JH: ActiveState's Komodo IDE has a GUI Builder built in for building Tk GUIs. It is itself written in Tcl/Tk (based off SpecTcl, although most of that code went out with the trash folder long ago ...). Previously Komodo has shipped on Windows, Linux and Solaris. We are currently porting it to OS X, GUI Builder included. This page shows a before and after, with some comments.
GUI Builder Before
This used all the classic Tk controls, with some megawidgets from BWidgets and some custom-rolled stuff. For all intents and purposes, this worked fine on Windows and unix variants. It isn't so happy for Aqua, as you can see ...
GUI Builder After
OK, this isn't "complete", but works for alpha look and feel satisfaction.
Comments
OK, I should comment on the many changes I had to make. First off though, the ...