QuickField and Tcl/Tk
Tcl/Tk is a combination of scripting language Tcl ("Tool Command Language") and graphical user interface toolkit. Tcl/Tk is available as a cross-platform freeware, and widely used for rapid prototyping and scripting applications.
Download the distributive of Tcl/Tk.
You can use Tcl/Tk to work with QuickField Object Model, QuickField command line, Parametric Object Interface and Parametric Command Line.
Examples of using QuickField with Tcl/Tk:
Relay dynamics simulation using Tcl/Tk and Parametric command line