Ray G4FON allowed me to add his website and CW Trainer to my Morse Archive hosted at http://tiny.cc/n1ea/ (shortcut to archive.org).

G4FON's Koch CW Trainer Version 9 is available for download here; :https://archive.org/download/G4FONKochMorseTrainerInstall/KochMorseTrainer%20Install.exe

G4FON's last available website, August 31, 2021 is here: https://web.archive.org/web/20210831153256/http://www.g4fon.net/

G4FON Koch CW Trainer Version 10 is available here: https://web.archive.org/web/20210103101202fw_/http://www.g4fon.net/CW%20Trainer2.php#Download

G4FON Contest CW Trainer Version 3 is avalable here: https://web.archive.org/web/20210812052905fw_/https://g4fon.net/Contest_Trainer_V3.php

I don't believe that Version 10 can be downloaded as Ray was requiring payment for this excellent program, however he allowed me to post the previous version, Version 9, which can be downloaded for no cost..

David N1EA