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GRBL controller application with G-Code visualizer written in Qt.
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GRBL controller application with G-Code visualizer written in Qt.

Supported functions:

  • Controlling GRBL-based cnc-machine via console commands, buttons on form, numpad.
  • Monitoring cnc-machine state.
  • Loading, editing, saving and sending of G-code files to cnc-machine.
  • Visualizing G-code files.

Version 0.8 release:

  • You can save files, transformed according to heightmap.
  • Console window have adjustable size now.
  • Added "Degree" minimum arc size to parser settings.
  • Some minor bugs fixed.


Translations will be available from here: translations

Previous versions:





Version 0.7 release:

  • Drag & Drop mechanism support added. You can drop files & plain text to main program window to open them.
  • "Abort" button added. File transfer can be interrupted without loss of work coordinates offsets now.
  • M2, M30, M18, M19 commands support added.
  • French translation added.
  • Some bugs fixed.

Version 0.6 release:

  • Improved visualizer performance.
  • Some appearance settings added.

Version 0.5 release:

  • Toolpath highlighting on g-code program table selection.


Version 0.4 release:

G-code modification with heightmap.

Original file: screenshot

Heightmap: screenshot

Bicubic interpolation: screenshot

Modified file: screenshot

Version 0.3 release:

  • Recent files & commands lists added.
  • Custom Z-probe commands supported now.
  • Imperial units of GRBL reports support added.
  • Main form compacted.

Visualizer only view: screenshot

Table only view: screenshot

Live G-code editing: screenshot

Version 0.2 release:

  • Jog/spindle control with numpad added:
  • Feed override function added.
  • "Spindle", "Feed", "Jog" groupboxes collapsible now.
  • Visualizer works in "Check mode" now.
  • Visualizer Z-buffer option added.
  • Some bugs fixed.


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