Universal G Code Sender 2.1.30 for Mac

Mac Utilities

Updated Aug 2, 2026

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Universal G Code Sender, often shortened to UGS, is a free and open source program that connects your Mac to a CNC machine and sends it G Code instructions. It works with GRBL, Smoothieware, TinyG and g2core controllers, and it is written in Java so it runs on Mac, Windows and Linux. It suits hobby machinists, makers and small workshops that want one dependable sender for milling, engraving and cutting jobs.

Key Features

• Sends G Code files to GRBL, Smoothieware, TinyG and g2core controllers
• Visualiser shows the toolpath so you can check a job before it runs
• Jogging controls and DRO readouts for positioning the machine by hand
• Lets you pause, resume and monitor a job while it runs
• Supports macros and common setup steps such as homing and probing
• Provides Mac builds for both standard and Apple silicon machines

How to Download

1. Use the download button on this page or open the official project website.
2. Download from the official site and choose the Mac package for your machine.
3. Unpack the download, start the program from the bin folder and connect to your controller.

FAQs

Is Universal G Code Sender free?

Yes. UGS is free and open source, and its downloads and source code are published by the project on GitHub.

Which machines can it control?

It talks to machines that use GRBL, Smoothieware, TinyG or g2core controllers, which covers many hobby CNC routers, mills and engravers.

Does UGS create designs or toolpaths?

No. UGS sends ready made G Code to the machine. You create the design and toolpaths in your CAD and CAM software first.