Yad - Yad (yet another dialog) is a fork of Zenity with many improvements, such as custom buttons...
AutoHotkey - The ultimate automation scripting language for Windows.
Glade - Glade is a RAD tool to enable quick & easy development of user interfaces for the GTK+ toolkit...
Batch MessageBox - Display message boxes from Windows batch files and command line programs.
wxFormBuilder - wxWidgets is an excellent framework that enables the creation of multi-platform applications with...
xdialog - Xdialog is designed to be a drop in replacement for the "dialog" or "cdialog"...