There seems to be an endless supply of computer languages. Time, however, is not endless, and you might want to look at a sample application before learning the syntax. These brief remarks refer to Tcl/Tk. Tclkit is a single-file interpreter for this language. (See Steve Landers' excellent discussion.) Another definition of Tclkit comes from Jean-Claude Wippler: a standalone runtime for Tcl/Tk applications. Jean-Claude's example for Tclkit uses Keith Vetter's Fractal Mountains demo. After downloading three files, Tclkit worked exactly the way J-C described.

This example application was portable just as expected. It fits on a floppy disk but runs slowly. A more practical sneaker-net option is to put the files on a Zip Disk and take it to any of your Windows machines (Win 98 or XP).