Probably the most straightforward thing to do is to learn and implement your own based on an early Forth like FIG Forth or Forth 83: http://www.forth.org/fig-fo

Probably the most straightforward thing to do is to learn and implement your own based on an early Forth like FIG Forth or Forth 83: http://www.forth.org/fig-forth/contents.html http://www.forth.org/fig-forth/contents.html http://forth.sourceforge.net/standard/fst83/ http://forth.sourceforge.net/standard/fst83/ There are certain cosmological nuances of Forth that come through by the time you get to where you have bootstrapped IF ELSE - and while later Forths add more features(which is great for production uses) they aren't the essence of Forth, which is in the minimalism. Factor is also so much different that it deserves another category, despite syntactic resemblance.