G-code sender creates a communication between computer and 3D printer and sends the g-code file to the 3D printer. Some programs such as Cura, provides slicing and g-code sending features combined. G-code file generated at slicing software must be sent via g-code sender to 3D printer. G-code sendermay sent the file which is loaded with “*.gcode” extension. The list below shows the G-code sender programs and download links.
MatterControl : http://www.mattercontrol.com/
RepRap Host Software: https://github.com/reprap/release
Printrun : http://koti.kapsi.fi/~kliment/printrun/