On desktops I've used gforth[0]. It's rather large and heavyweight, but easy to install and has decent documentation; not a bad starting point. Alternatively, J

On desktops I've used gforth[0]. It's rather large and heavyweight, but easy to install and has decent documentation; not a bad starting point. Alternatively, JonesForth[1] is an excellent extensively-commented implementation suitable for reading start-to-finish. [0] https://www.gnu.org/software/gforth/ https://www.gnu.org/software/gforth/ [1] https://github.com/nornagon/jonesforth/blob/master/jonesforth.S https://github.com/nornagon/jonesforth/blob/master/jonesfort...