Graphical User Interfaces
Here you'll find tutorials on building Graphical User Interface applications using the various GUI libraries available to Ruby programmers. Includes directions about using Tk, Qt and GTK libraries.
Ruby Howto: Graphical User Interface
A Qt toolkit tutorial using Ruby.
Basic GUI Tutorial
A simple GUI tutorial with Ruby/Tk.
Korundum Qt and KDE Bindings
Using Ruby to both create Qt applications and interact with the K Desktop Environment with Ruby.
Shoes, a Tiny GUI Toolkit
A tiny cross-platform GUI toolkit for Ruby written by whytheluckystiff.
The Shoebox
A community-driven repository of Shoes-based programs.