I work for a few years as a programmer in motion control.
Here is some freeware I made:

http://www.plasma777.com

One is BMP to DXF (or GCODE) -> tracing softwer god for plasma or lasr

Second is CAM (part maker) good for plasma laser and maybe for router
Export to GCODE is finished but i still work on it

I have plan to build nesting program with export to GCODE, so almost
complete system for plasma cutting