SourceRabbit GCode Sender is described as 'This is the free 3-Axis version of our GCode Sender. It is compatible with all 3-Axis GRBL CNC machines. It features a highly optimized and asynchronous (event-driven) UI and USB-to-Serial communication'. There are five alternatives to SourceRabbit GCode Sender for Windows, Linux, Mac and Raspberry Pi. The best alternative is bCNC, which is both free and Open Source. Other great apps like SourceRabbit GCode Sender are Universal Gcode Sender (Free, Open Source), Candle (Free, Open Source), CNCjs (Free, Open Source) and Ultimate CNC (Freemium).
Cross platform G-Code sender with advanced features for GRBL based CNC machines. Universal Gcode Sender is a self-contained Java application which includes all external dependencies, that means if you have the Java Runtime Environment setup UGS provides the rest.
Candle - GRBL controller application with G-Code visualizer written in Qt. GRBL controller application with G-Code visualizer written in Qt. Supported functions: Controlling GRBL-based cnc-machine via console commands, buttons on form, numpad.
G-Code sender application for GRBL-based CNC-machines with Windows, Linux and MacOS. Features: Visualizes g-code and real time traces in 3D, Autoleveling Z-axis for PCB milling, Tool changes, Custom commands through macros.