ViewMate Alternatives
ViewMate is described as 'Gerber viewer and editing workhorse. Free, Basic and Premium/ versions. Packed with Power User features, Smart DFM makes CAM setup easy!Fix, Save, Quote and Order PCBs instantly' and is an app. There are six alternatives to ViewMate for Mac, Windows, Online / Web-based and Linux. The best alternative is EasyEDA Gerber Viewer, which is free. Other great apps like ViewMate are Gerbv, MCN Gerber Viewer, 3D Gerber Viewer and ZofzPCB.
EasyEDA Gerber Viewer is a viewer for Gerber RS-274X files, Excellon drill files online, After you upload your gerber file, we will render it as images, and with top photo viewer and bottom photo viewer.
Discontinued
"EasyEDA Online Gerber Viewer doesn't maintain anymore, please go to JLCPCB to view the Gerber."
Gerbv is a viewer for Gerber RS-274X files, Excellon drill files, and CSV pick-and-place files.
MCN Gerber Viewer is a Mac Os X application for viewing and printing electronic PCB data files. Supported formats are Gerber-X (RS-274X), Gerber-D (RS-274D) and Excellon. MAC OS X 10.6 or later.
With this viewer you can upload your Gerber files and have a 360 degree view of your PCB design. Launch the viewer to load your own design or view one of the example boards.
The fastest, easiest, most intuitive way to check your PCB design… before it goes to manufacturing
Simple Gerber viewer for the OS X platform. It runs on OS X 10.10 (Yosemite) and 10.11 (El Capitan). There are two versions: Full and Community Edition. The (paid) Full version contains fully functional versions of the latest and greatest features.