Will any gcode program work with mach3?

Was wondering if any gcode program would work with mach3?

https://www.machsupport.com/downloads-updates/cam-post-processors/

THIS IS WHAT Mach web-site lists obviously theres more out there including FUSION
and the post processor from Lamuir systems.

I’ve loaded gcode from program’s I made for Allan Bradford controller. The only thing is you have to edit the M & some Gcode to match what Mach3 uses for start and stoping cuts. Some of my files use 5 axis so it’s not worth the time too much editing involved.