CAMConversionSoftware

Lazycam part of the Mach3 with a pro version having additional features
Gcode2000 DXF to Gcode conversion
TTFtoDXF  Takes true type font text paragraphs and converts it to a dxf file.
CncSimulator Free package for testing CNC programs - linked to Microtech site
SheetCam Simple 2.5D conversion package
Dolphin CadCam One of the few packages that ctually work as a drafting package as well
VectorCAM Another drawing package with CAM output modules
KCam Also a serial port controller in design
MeshCam Nice 3D conversion progrm - reasonable price
VCarve Wizard Relief surface sculpting using a v-bit cutter
Virtual Sculptor VS3D Relief surface sculpting but expensive
ProtoWizard Specialist machining package for the jewelry trade - includes fixtures to support rings and the like
SprutCAM Lite version for £500 looks nice but price goes up for full version