If you follow the link: http://www.software-lab.de/download you will find a Lisp that the author (and I) has used in many projects. I believe he has been freelancing for over 30 years, and at least the last 12-15 have been using this (or predecessors of it) language. I have also been freelancing for 19 years and "doing what I want". I did python for 7 years and have now switched to using picolisp. randix.net