'''GNU Forth''' is a portable, hybrid direct/indirect-threaded (executable name '''gforth''' or '''gforth-fast''') or indirect-threaded (executable name '''gforth-itc''') implementation of the Forth language from the GNU project. It obeys the ANS standard and comes with many libraries and bits of sample code.

  • [http://directory.fsf.org/project/gforth/ Free Software Directory entry]
  • [http://www.complang.tuwien.ac.at/forth/gforth/Docs-html/ GNU Forth HTML manual]