forth

The concept that programming is something that you need special education to do is not right. It is something that is promoted by the priesthood.
— Chuck Moore, inventor of forth

There are a few different flavor's of forth included on sans,

starting forth
forth tutorial
introduction to thoughtful programming and the forth philosophy
simple forth
concatenative.org/wiki/view/Forth

backlinks: languages.html repl.html ufx.html uxntal.html