>I just never seem to see common examples with it compared to something written in Electron.
Autodesk Fusion 360 uses Qt[1]. (It's 3D CAD modeling software like Solidworks/Inventor). Some screenshots of its UI : https://www.google.com/search?q=%22autodesk+fusion+360%22+ui...
CAD/CAM modeling software is resource intensive and users always complain about slow performance when manipulating big files so writing that type of app in Electron/Chrome/Javascript browser engine would be worse than native C++/Qt.
That said, another competitor Onshape is browser-based and yes, people do complain about its performance.
Some other well-known desktops using Qt are Autodesk Maya and Wolfram Mathematica.[2]
[1] https://forums.autodesk.com/t5/fusion-360-api-and-scripts/wh...
[2] https://en.wikipedia.org/wiki/Category:Software_that_uses_Qt