CAMmill 
CAMmill is a CAM application designed to take CAD files in DXF format, produce tool paths and gcode for CNC machines.
Some key features include:
- Automatic Offsets (Inside / Outside)
- Normal and Climb milling
- Rotary-Axis Support
- Laser-Mode (inc. Offsets)
- Tool/Material calculations for feedrate and tool-speed
- Holding-Tab's
- Support for milling MTEXT from dxf
- LinuxCNC tool table import
- Setup-Presets
- Lua scriptable Post-Processor compatible with SheetCam
- OpenGL GUI and batch-mode
- Its Free!
Missing features: see #6. Please help translate to your language.
Build and run
see Wiki
Support
Join us on IRC (#cammill on Freenode), check out our FAQ, We're here to help!
Facebook https://www.facebook.com/cammill2d