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Windows 10/11 · 64-bit

Download GRBL Server

One installer for Windows, single computer per workshop. It opens in its own window there; other computers on the same network connect through a browser. Your first month is free — no account, no card required.

Before you install

Windows may warn you the first time.

GRBL Server is new software from a young company, so Windows SmartScreen may briefly show a "Windows protected your PC" message until the app becomes widely recognised. That's normal for new software — the copy on this site is the genuine one.

If you see it, click More info, then Run anyway.

Published by
Sistemas Tecnicos Catalunya S.L.
NIF
B65889214
Office
Bp-150 63,Rubí, Barcelona
08191 · Spain
About the company →
LATEST v0.2.6 · Sep 9, 2026
Added Fill in workflow settings at compile time. Any setting in the workflow editor can now be turned into a question that's asked each time you press Compile or Run — for example which folder to pull from, the sheet size, or which machine to use — instead of being locked into the workflow. The value you set in the editor becomes the default, your last answers are remembered, and the values actually used are shown on the progress card and saved in the run history. Workflows that don't use this are unaffected. View the G-code a workflow produces. When a workflow finishes compiling, a View G-code button opens each generated file in the Job Station, exactly like a normal job — with the preview, the 2D/3D view, machine controls and macros. You can now check a workflow's output before you ever run it, and reopen it later from View compiled G-code in the workflow card's menu. Compiling again replaces the previous result. Choose the software language (Software Settings → General): English, Spanish, German or French. GRBL Server starts in your computer's language and follows your choice from then on. Duplicate a workflow from its menu in the workflows list. The copy keeps every step and setting, and starts clean with no compiled G-code or run history of its own. You can rename it before confirming. "Keep running in background" setting (Software Settings → Settings → General). By default, closing the app window keeps the server running in the notification area so jobs aren't cut short. Turn this off if you'd rather the window's X quit GRBL Server completely. Either way, you're asked to confirm first when a job is running or another computer is connected. A Back button in the Job Station, in the bottom bar. It returns you to wherever you opened the job from — the jobs list, the activity page, or a workflow's compiled G-code. Changed The interface language no longer comes from your web browser's language settings. The new Language setting decides it everywhere, including on a phone or computer connected over your network. Fixed Changing the folder group on a workflow's Local folder step no longer clears the filename filters (prefix, suffix, extension) you set on it. Re-compiling a workflow no longer shows the previous compile's shapes in the Job Station preview while the machine runs the new program. When a workflow step is missing a required value, compiling now names the step and the setting to fill in, instead of showing a confusing database error. When a workflow's database query matches no rows, the app now says so plainly instead of reporting a missing column. Changing a setting that takes effect immediately no longer shows a "restart required" message by mistake. Log lines can now be selected and copied.
SHA256
b00730b81fd55a259e455782509416f572ba34fa015c3724a20b8067d9e02f6a
Download for Windows

Windows 10/11 · 64-bit

Procedure

Installation

  1. 1 Run the installer. If Windows SmartScreen appears, follow the note above.
  2. 2 Launch GRBL Server. It opens with the workspace ready — no browser to open on that computer.
  3. 3 To use it from another computer or laptop on the same network, open the address shown on the app's Server page.
  4. 4 Click Start your free month on the first screen — no account needed. Already subscribed? Sign in with your GRBL Server account instead.
  5. 5 Connect your first machine over USB serial or Wi-Fi WebSocket.

Need help? See the installation guide.

Looking for what changed in earlier builds? See the full changelog. Only the latest version is available to download.