To download the latest release visit:
If you don't have Java installed download the latest version and install it on your computer from https://java.com/en/download/manual.jsp.
SourceRabbit GCode Sender is a GRBL compatible, cross platform G-Code sender written in Java. 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.
Note for MAC users: You may need to create a "/var/lock" directory with write permission. To do this open the Terminal application and run the following two commands:
sudo mkdir /var/lock
sudo chmod 777 /var/lock