[hamstergene]

> But wouldn't knowing that require that you investigated the tech choices of all the apps you are using?

I did investigate every app I ran, because I was programming UIs and was interested in all tech that was there. To the point of being able to tell whether the app was written with Delphi or Qt or MFC/ATL by just playing with it.

Qt apps on Mac always stand out, being "OK" is the top they achieve.

Windows is less offended because it has never had a stable style, but still, there are always tiny details like context menus or not responding to Ctrl+Arrows that give non-native away.