The GTK-server - Interpreted GUI programming

Unix General

The DeskTop KornShell (Sun Solaris / Tru64 Unix): http://docs.sun.com/app/docs?q=dtksh manual here and an article here)

Unix/BSD/Linux

The Xdialog website: http://xdialog.free.fr/

The YAD page: https://www.mankier.com/1/yad

Gnome's Zenity page: https://wiki.gnome.org/Zenity

The GUIS website (Python and RUBY related): http://www.starynkevitch.net/Basile/guisdoc.html

The Small Application Toolkit SHELL: http://www.satisoft.com/satshell/

The Ch SHELL: http://www.softintegration.com/products/toolkit/gtk/

getGUI: http://getgui.sourceforge.net/html/welcome.html

GTK+/Bash: http://bror.org/mark/software/gtkbash/

Mac OS X

Pashua: http://www.bluem.net/en/mac/pashua/

Microsoft Windows

Microsoft VB script: http://msdn.microsoft.com/en-us/library/t0aew7h6%28VS.85%29.aspx