Gerbv and GerberLogix sit in the same corner of the toolbox — programs whose job is to open Gerber files so a human can look at them before money is spent on fabrication — but they are built on different models. Gerbv is free, open-source software (GPL-2.0-or-later) for Windows, macOS and Linux, with every feature it has available to every user. GerberLogix is a Windows-only free viewer with a Pro tier: a commercial product where the free version is the entry point and a paid tier sits above it. Neither positioning is automatically better; they suit different buyers. This page compares the two at that level — platform, cost model, formats and workflow — so you can pick deliberately. The wider landscape is in our roundup of the best free Gerber viewers.
Platform: the first filter
For many readers the decision ends here. GerberLogix is a Windows-only viewer. If your bench machine runs Windows and always will, that is no obstacle. If you work across Windows and macOS, run Linux in the lab, or might hand files to a colleague on another system, Gerbv’s cross-platform builds — Windows, macOS and Linux from the same project — keep one tool, one set of habits and one checklist everywhere. You can get the current builds from the download page. A standalone overview of what to expect from a desktop viewer is on our Gerber viewer hub page.
Cost model: open source vs freemium
Gerbv’s model is simple to state: it is free software, the source code is public, and there is no tier above the one you downloaded. Nothing is held back for a paid edition, and nobody will prompt you to upgrade. GerberLogix follows the freemium pattern common in commercial tools: a free viewer to start with, and a Pro tier for users who want more from the same product. That model has a genuine advantage — a commercial roadmap and a vendor whose business is the tool itself — and a genuine question you should answer before settling in: are the capabilities you personally need inside the free tier, or in the Pro tier? Answer that from the vendor’s own current material, because tiers and their contents are the vendor’s to change. With Gerbv the equivalent question does not arise; the feature list you see is the whole product.
The viewing job itself
On the core task the two are comparable in intent: load a fabrication set, stack the layers, look carefully. Gerbv views Gerber RS-274X layers, Excellon drill files and CSV pick-and-place files, lets you stack several files, toggle and recolour layers, and take measurements on the displayed image. It opens report windows with statistics on the Gerber and drill codes used, including aperture usage, and it exports the view to PNG, PDF, PS, SVG and DXF — useful when a fab house or a client needs a picture rather than a lecture. It works entirely offline and needs no account, which matters when the design is someone else’s intellectual property. What Gerbv does not do is equally clear: it is a 2D viewer — no 3D, no DRC — and it does not read legacy RS-274D files. Judge GerberLogix’s free tier against the same checklist: formats in, measurement, reporting and export out.
Who each one suits
Choose Gerbv if you want a free viewer with no tiers, if you work on more than one operating system, if you value open-source licensing, or if your checking routine leans on measurement, statistics reports and image export. Choose GerberLogix if you are Windows-only, prefer a commercial product with a Pro upgrade path inside the same tool, and have confirmed the free tier covers what you need. In both cases the healthy habit is identical: view the exact ZIP you are about to send, layer by layer, before you order — the guide to loading and aligning layers shows the routine in Gerbv.
Support and continuity
The models differ here too, in ways worth weighing honestly. A commercial vendor offers a defined support channel and a product roadmap funded by its tiers — for some buyers that accountability is exactly what the Pro tier pays for. An open-source project like Gerbv offers different assurances: the source code is public, the program cannot be withdrawn from your machine or relicensed under your feet, and it keeps working offline whether or not any company continues to exist. Neither guarantee is imaginary; they are simply different kinds of safety, and which one you value depends on whether your work answers to procurement or to yourself.
The honest bottom line
This is not a contest with a trophy. It is a choice between an open-source, cross-platform viewer that is complete as downloaded, and a Windows commercial viewer whose free tier is a doorway to a paid one. If the doorway leads somewhere you want to go, that is a reasonable purchase. If you simply need to inspect fabrication files well, on any machine, without a sales funnel — that is exactly the job Gerbv exists for.
Frequently asked questions
Is GerberLogix really free?
GerberLogix is a free viewer with a Pro tier: the viewer itself is free, and a paid tier exists above it. Which capabilities live in which tier is set by the vendor, so check their current material before relying on a specific feature. Gerbv has no tiers — the free download is the whole program.
Does Gerbv run on the same machines as GerberLogix?
Gerbv runs on Windows, and also on macOS and Linux, where GerberLogix — a Windows-only viewer — does not. If your work is Windows-only, both are candidates; if it is not, Gerbv is the one that follows you.
Can both viewers open a full fabrication set?
Gerbv opens Gerber RS-274X layers, Excellon drill files and CSV pick-and-place files, stacked together for alignment checks and measurement. Test any viewer — including a free tier — against your own real ZIP before adopting it, since tier contents vary.