CNC control software for 3-Axis GRBL compatible CNC machines. It features a highly optimized and asynchronous (event-driven) UI and USB-to-Serial communication and can be also used on computers with small amount of RAM and CPU.
SourceRabbit GCode Sender needs Java.
If you are using Windows you can download Java with the GraalVM Installer for Windows
For other operating systems download java from: https://java.com/en/download/manual.jsp