Hi, I'm the author of the Collimation Circles application. It is free and open source.
Collimation Circles application is EAC (Electronically Asisted Collimation) tool to achive perfect or near perfect telescope collimation.
Here are some useful links for you to get started:
application home page :
https://saimons-astronomy.webador.co...mation-circles
githup page:
https://github.com/sajmons/CollimationCircles
download page:
https://github.com/sajmons/CollimationCircles/releases
latest release blog post:
https://saimons-astronomy.webador.co...es-3-0-is-here
I hope you will find it useful. Thank you!