!forth         nonstandart forth interpreter/compiler 
               I think this software is incomplite (at least the dokumentation)
forthdemo      nonstandart forth-interpreter-demo, (fileoperations disabled (except pipes ))
               requires normally malloc or RMAfree ( I hav'nt it yet (sorry))
               malloc is a part of the max-program 
Aforth Vers.   0.01 ANS-forth interpreter/compiler  (full implementation) 
Tileforth      Ansi-83 forth interpreter/compiler   (full implementation)
armforth       Ansi-83 forth compiler/interpreter   (full implementation)