What Gerber File Viewer is This?

PCBWay sent me this image while trying to troubleshoot my circuit board file content not showing up. I want to know if this program is available so I can download/buy it to troubleshoot my output gerber files without waiting for them to do it for me. Does anyone recognise this program, or can at least identify what it is built on? If not, I suppose the program is proprietary...

• hm, why not ask PCBWay? They'll tell you... – Marcus Müller Feb 9 at 17:49
• @Marcus Muller They have been very non-cooperative. They did not say that the viewer is proprietary, but they did say "We use our own gerber viewer, send us the files and we will look over them." This seems more like a marketing tactic, which I do not blame them for, but their online preview is trash and filled with errors, I must see how my output files actually look. – Hackstaar Feb 9 at 17:54
• In that case... I cropped the image to a few of the icons from the actions menu bar, but reverse image searches (bing, google) revealed nothing; given the color scheme, this might really be software specific to the Chinese market. Well, if it can't be helped: I'm pretty happy with gerbv from the gEda toolchain, and nearly as happy with gerbview from kiCad. Both are free software. – Marcus Müller Feb 9 at 18:53
• Vote with your wallet. Tell PCWay that my project is not important enough to them so I will recognize their recommendation and take my PCB fabrication project elsewhere. – Dan1138 Feb 9 at 20:55
• It looks like Mentor Graphics Valor \$200K production programming packages. – crasic Feb 9 at 23:37