Interesting look at what folks are using for CNC software. Mach3 still rules overall. But what is interesting is how LinuxCNC (and some versions of it commercialized) is gaining a bit over the past few years. Also interesting is how GRBL (arduino) is making a showing now.
http://blog.cnccookbook.com/2016/08/23/choose-best-cnc-control-2016-cnc-control-survey-results/