CNCjs is a full-featured web-based interface for CNC controllers running Grbl, Marlin, Smoothieware, or TinyG.
Such CNC controllers are often implemented with a tiny embedded computer such as an Arduino with added hardware for controlling stepper motors, spindles, lasers, 3D printing extruders, and the like. The GCode commands that tell the CNC controller what to do are fed to it from a serial port.
This is free and open source software.
Key Features
- Supported controllers
- Grbl.
- Grbl-Mega.
- Marlin.
- Smoothieware.
- TinyG (Recommend: firmware version 0.97 build 449.xx).
- g2core.
- Desktop App for Linux, macOS, and Windows.
- 6-axis digital readout (DRO).
- Tool path 3D visualization.
- Simultaneously communicate with multiple clients.
- Responsive view for small screen display with device width less than 720px.
- Safari on an iPhone 5S.
- Customizable workspace.
- Custom widget.
- Custom MDI (Multiple Document Interface) command buttons.
- My Account.
- Commands.
- Events.
- Keyboard Shortcuts.
- Contour ShuttleXpress.
- Multi-Language Support.
- Watch Directory.
- Tool Change.
- Z-Probe.
Website: github.com/cncjs/cncjs
Support:
Developer: Cheton Wu
License: MIT License

CNCjs is written in JavaScript. Learn JavaScript with our recommended free books and free tutorials.
Related Software
| CNC Software | |
|---|---|
| Universal Gcode Sender | gcode platform used for interfacing with advanced CNC controllers |
| LinuxCNC | Drive milling machines, lathes, 3d printers, laser cutters, ... |
| CNCjs | Web-based interface for CNC milling controller |
| gSender | Connect to and control Grbl-based CNCs |
| OpenCamLib | Library providing computer aided manufacturing (CAM) algorithms |
| bCNC | Cross-platform Python application for CNC machines |
| Kiri:Moto | Browser-based Slicer for 3D printers, CNC mills, and Laser cutters |
| OpenBuilds CONTROL | Connect and control your CNC, Laser, Plasma or Dragknife machine |
| Luban | 3-in-1 software tailor-made for Snapmaker machines |
| Inkcut | Control 2D plotters, cutters, engravers and CNC machines |
| Rayforge | Laser cutters and engravers tool |
| MeerK40t | Laser cutting software |
| CAMotics | 3-axis CNC GCode simulator |
| Machinekit | Platform for machine control applications |
Read our verdict in the software roundup.
Explore our comprehensive directory of recommended free and open source software. Our carefully curated collection spans every major software category.This directory is part of our ongoing series of informative articles for Linux enthusiasts. It features hundreds of detailed reviews, along with open source alternatives to proprietary solutions from major corporations such as Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk. You’ll also find interesting projects to try, hardware coverage, free programming books and tutorials, and much more. Discovered a useful open source Linux program that we haven’t covered yet? Let us know by completing this form. |

