Quick Answer: LaserGRBL is free, open-source, Windows-only software that sends jobs to GRBL-based diode lasers — it’s the no-cost way to get a Sculpfun, Ortur, or AtomStack machine running. LightBurn costs $99 (Core) or $199 (Pro) but adds real vector design tools, camera alignment, rotary support, material test grids, and runs on Windows, Mac, and Linux — plus it’s the only one of the two that supports CO2 and fiber machines. Pick LaserGRBL if you own a GRBL diode laser, run Windows, and only need basic image-to-engrave jobs; pick LightBurn for design work, a Mac/Linux workflow, or any CO2/fiber machine.
Every diode laser ships with a “works with LaserGRBL and LightBurn” line in its spec sheet, and new buyers often assume that means the two are interchangeable. They’re not — one is a free utility that gets a beam moving, the other is a paid production suite that most serious hobbyists end up buying anyway. This guide breaks down exactly where they differ so you don’t pay for software you don’t need, or hit a wall with software that’s too limited for the machine you bought.
LightBurn vs LaserGRBL at a glance
| Factor | LightBurn | LaserGRBL |
|---|---|---|
| Price | $99 (Core) / $199 (Pro), one-time | Free, always |
| License model | Perpetual + 30-day trial, $40/yr updates after year 1 | Open source, no license needed |
| Operating systems | Windows, macOS, Linux | Windows only |
| Controller support | GRBL (Core) + Ruida/Trocen DSP + EZCad2 galvo (Pro) | GRBL v0.9 / v1.1 only |
| Vector design tools | Full Art/Cut mode, layers, offsets | None — image/G-code focused |
| Camera alignment | Yes | No |
| Rotary attachment support | Built-in | Limited, community workarounds only |
| Material test grid | One-click generator | Manual, no built-in tool |
| Works with xTool / CO2 / fiber | Yes (Pro for CO2/fiber) | No |
| Best for | Design work, multi-OS, any controller | Free basic jobs on a Windows GRBL laser |
Where they actually differ
Price and licensing. LaserGRBL costs nothing — no trial, no license key, no feature gate, per the project’s own GitHub repository. LightBurn charges $99 for Core (GRBL/GCode machines) or $199 for Pro (adds DSP and galvo controllers), both one-time purchases with a year of free updates, then $40/year to keep updating afterward — though you can keep using the version you paid for indefinitely without renewing.
Controller compatibility. LaserGRBL only speaks to GRBL v0.9 and v1.1 firmware, the open-source controller running on most budget open-frame diode brands — Sculpfun, Ortur, AtomStack, TwoTrees, and NEJE all ship GRBL out of the box. LightBurn covers that same GRBL layer in its Core tier, then extends into Ruida/Trocen DSP boards and EZCad2-based galvo systems in Pro — the controller types standard on CO2 tube lasers and fiber marking machines. If your machine is a CO2 or fiber laser, LaserGRBL isn’t an option at all.
Design tools. LaserGRBL is built around one job: load an image or G-code file, adjust power/speed/resolution, and burn it — it does convert JPG/PNG/BMP images and basic SVGs into laser instructions with dithering and vectorization, but it isn’t a design environment. LightBurn adds a full Art/Cut mode split, layer-based job settings so one file can engrave-then-cut in a single run, offset/kerf handling, and built-in camera and rotary support — a two-stage camera calibration process LaserGRBL has no equivalent for — the tools that separate a hobbyist doing one-off gifts from someone running an Etsy shop.
Operating system. LaserGRBL is Windows-only. LightBurn runs natively on Windows, macOS, and Linux — worth knowing before you buy if your everyday machine is a Mac, since LaserGRBL simply isn’t an option there regardless of how basic your jobs are.
The machine this decision actually depends on
Ortur Laser Master 3 (10W) — GRBL diode, works with both
- Ships GRBL v1.1, so it runs LaserGRBL for free with zero setup beyond the driver, or LightBurn Core ($99) if you want design tools.
- 400×400mm bed and built-in WiFi make it a common first laser for buyers deciding between the two software paths.
- Full LightBurn support if you outgrow LaserGRBL's image-only workflow later — no firmware swap required.
Ordering a new laser or a spare rotary attachment while you’re getting your software sorted? A free 30-day Amazon Prime trial covers two-day shipping so you’re not stuck waiting on parts mid-project.
If your machine runs a DSP or galvo controller instead — most CO2 tube lasers and fiber markers — LaserGRBL was never going to work for you regardless of price; see our best laser engraving software roundup for the full field, or what is LightBurn for a deeper look at Core vs Pro pricing and licensing.
How to decide in 30 seconds
- You own a GRBL diode laser and only run pre-made files: LaserGRBL — it’s free and does the job.
- You want vector design, layers, or a material test grid: LightBurn Core ($99) — LaserGRBL has no equivalent.
- You’re on a Mac or Linux machine: LightBurn — LaserGRBL doesn’t run there at all.
- You own a CO2 or fiber laser: LightBurn Pro ($199) is close to mandatory — LaserGRBL can’t drive DSP or galvo controllers.
- You’re not sure yet and money’s tight: start with free LaserGRBL on a GRBL diode machine, then upgrade to LightBurn once you hit a wall — nothing about starting free locks you out of switching later.
The bottom line
LaserGRBL is the right call if your laser is a GRBL diode machine, you’re on Windows, and you just need to burn image files without paying anything. It’s genuinely free with no catch, and for a first laser doing simple engraving that’s often all you need — see our best diode laser engraver roundup for GRBL-based picks that pair with it out of the box. LightBurn is the right call almost everywhere else: any CO2 or fiber machine, any Mac or Linux setup, or any diode owner who wants real design tools, a rotary, or a camera-aligned workflow. Most hobbyists who start on LaserGRBL end up buying LightBurn Core within their first few projects — so if you’re already leaning toward more than basic engraving, it can be worth skipping the free tier and buying once. Still narrowing down the machine itself? Our best laser engraver pillar and diode vs CO2 laser comparison cover the hardware side of this same decision.