1985  Lifo (Lisp/Forth, experimental)
      CP/M-68k  (68000 Assembler)

1997  Muesli (Lisp)
      DOS  (8086 Assembler)

1988  Pico (Lisp)
      Macintosh, Unix, DOS  (C)

1991  Femto (Lisp/Forth)
      DOS  (8086 Assembler)

1994  Lifo (Lisp/Forth)
      Unix  (C)

1996  TeaTime (Lisp/Forth, experimental)
      Java  (Java)

1998  TeaTime (Lisp/Forth)
      Java  (Java)

1999  Pico (Lisp)
      Unix  (C)
