easyDncXP
Includes Direct DNC Transfer of data to and from CNC memory as well as Drip-Feeding of the largest CNC programs with Start, Stop, pause, restart and automatic DNC repeat. Gone are the days when you had to type everything. Now you can do most things with just a few mouse clicks. ... Select and send files to CNC machines by simply dragging and dropping them onto the machine icon and youre ready to go. ... In most cases you wont need to worry about that at all because easyDNC now has an Automatic Port Scanning feature which can detect and setup most CNC and DNC parameters automatically.
http://www.dncxp.com/dncxpzip.exe - 3Mb - Download - Screenshot

EditCNC
EditCNC includes many powerful features designed purely for CNC programming and editing, as well as the basic features you would expect from any editor of this quality, such as search and replace, multiple undo/redo, multiple open files, file size limited only by the capacity of your computer, etc. ... Most basic CNC programming can be done faster and easier just by writing the g-code. ... Use EditCNC as part of your arsenal of CNC programming tools! ... In addition, EditCNC includes many powerful features designed purely for CNC programming and editing.
http://www.editcnc.com/EditCNC_demo.exe - 5Mb - Download - Screenshot

CNC Syntax Editor
These days, digital technologies are coming into use in almost every area of our life. The high precision of machine-controlled operations coupled with extended overall reliability ensure an optimum result. Almost everything from photos to financial is becoming digital. ... The application is capable of all types of ASCII CNC files and G codes, ensuring optimum performance even on larger files. ... CNC Syntax Editor can highlight program syntax and visually split commands and coordinates into groups, helping you to develop NC programs.
http://www.cnc-syntax-editor.com/download/cncsyn20.exe - 2Mb - Download - Screenshot

dncSoftware
dncSoftware is an easy to use DNC software program that makes CNC file transfer very easy to use. Up to 32 CNC machines. Includes many DNC debugging tools, including protocol analyzer, example DNC settings and terminal window. NC Code editor with code transformation tools.
http://www.dncsoftware.net/download.htm - 1Mb - Download - Screenshot

ConnectCNC
DNC or file transfer between computer and CNC Control. You can use ConnectCNC for any number of machines, and simultaneous transfer or DNC capability is limited only by the number of COM ports on your PC. Note that each of the CNC controls in your shop can have its unique configuration and port... We offer ConnectCNC as an alternative to the very powerful, but very expensive DNC programs that have features most users don't need. ... Try ConnectCNC free for thirty days.
http://www.connectcnc-dnc.com/ConnectCNC_demo.exe - 1Mb - Download - Screenshot

dnc4U
dnc4U is an easy to use DNC software program that makes CNC file transfer a real snap. Up to 32 CNC machines. Includes many DNC debugging tools, including protocol analyzer, example DNC settings and terminal window. Simple icons for send and receive, only 1 click to send, with easy DNC restart... Full color syntax highlighting, unlimited filesize, long filenames, unlimited undo/redo find/replace/wildcard search, rapidly find any file and DNC using file finder. ... It's great value so download your free sixty day trial now!
http://www.dnc4u.com/freetrial_dnc_software.htm - 3b - Download - Screenshot

NC Editor
NC Editor is a Numerical Control (. NC) file viewing, editing and printing application. CNC Machines worldwide use Numeric Control files (. nc or . ncc) to convert programmed instructions to tool movement. NC programs consist of a sequence of codes with parameter data to arrive at a precise... NC Editor has been designed keeping CNC programmers in mind. ... Support for clipboard operations. ... Undo operations. ... Automatic E-mailing of NC files. ... Predefined Axis and Isometric views Perspective and Orthographic projection.
http://www.fpsols.com/installers/NCEditor.exe - 977Kb - Download - Screenshot

Machinist MathGuru
Solve common trade maths problems in a whiz with Machinist's Math Guru software. This inexpensive, easy to use utility is designed primarily for students, machinists, toolmakers and CNC programmers. However some functions, such as the trigonometry and chord calculations, have a wide variety of... Functions include: Right angle and oblique trigonometry, speed and feed calculations, thread measurements, bolt hole circles, tapping drill charts, etc.
http://www.machinist-math-guru.com/Math-Guru-Setup.exe - 3Mb - Download - Screenshot

Machinist Calculator
The Machinist Calculator has been developed to quickly solve common machine shop trigonometry and math problems at a price every machinist can afford! As a machinist or CNC programmer, you often have to use trigonometry to calculate hole positions, chamfers, sine bar stacks, dovetail... On the other hand, you can use the Machinist Calculator fast, easy and accurate and affordable. ... You often have to leaf through reference books, drill charts, speed and feed tables, thread wire charts and so on to find the information you need.
http://www.machinist-calculator.com/Eng/MachinCalc.exe - 3b - Download - Screenshot

Bmp2Cnc
Bmp2Cnc reads the file in bitmap format (Jpg or BMP with 32,24,16,8 or 1 bit/plane color). Color or grayscale is quantified to adjust Z-axis depth, different tool overlaps, depths and tool radius are permitted. Final sizes of X-Y output can be scaled and stored into CNC files that could run with... STL file for 3d preview and for use in other CAD/CAM applications. ... Bmp2Cnc provides a default set of Postprocessor available with the product installation. ... Bmp2Cnc also create an . ... It is possible to quickly and easily create new Postprocessors or modify existing ones.
http://www.mr-soft.net/file/Bmp2Cnc.zip - 3Mb - Download - Screenshot