FREIGHTRAIN
Ruby desktop development made easy
Freightrain is a framework for ruby desktop development. It works with a
number of toolkits (including gtk+ via the ruby/gnome2 bindings) and
it’s MVVM and composition oriented.
Long story short: create your interfaces with Glade and automatically
get them loaded in your ruby program, with a nice MVVM layer on top of
it and a lot of other goodies 
This release pushes a workaround for the glade files format - glade
expects you to use them with gtk3, so some elements have wrong names
such as GtkBox instead of GtkVBox/GtkHBox.
–
Andrea D.