>>Here is a version of Forth that runs under Windows, written in Whitespace:
  >
  >>
  >>I can't get it to run.  Do you think my browser has clobbered the code?
  Hmmm. I did exactly as the web page[1] suggests: "What do you do? Simply
  print it out and delete the file, ready to type in at a later date.
  Nobody will know that your blank piece of paper is actually vital
  computer code!"  I sure hope that I didn't mistake my only copy of the
  source code for an ordinary blank page!

  Perhaps writing my Befunge[2] compiler in Malborge[3] and then making it
  to a Forth[4] compiler written in Whitespace[1] wasn't such a good idea...

 References:
 1 http://compsoc.dur.ac.uk/whitespace/
 2 http://dmoz.org/Computers/Programming/Languages/Befunge/
 3 http://www.freebsd.org/cgi/query-pr.cgi?pr=28147
 4 http://www.cbel.com/forth_programming_language/