You're right, there's no native-feeling cross-platform UI library for native apps, and the browser isn't poised to be an exception to that. Apps made in the bro

You're right, there's no native-feeling cross-platform UI library for native apps, and the browser isn't poised to be an exception to that. Apps made in the browser don't feel native. The closest to native-feeling app built in a browser that I can think of is Atom, which feels like a more sluggish version of Sublime (a Qt app). Neither of them feel as native as truly native apps do on their native platforms. Not nearly as native as Gedit on GNOME, Kate on KDE, Notepad++ on Windows or TextMate/BBedit on Mac. And they never will because the native feel comes from paying close attention to the design language and behavior of your app with respect to the host platform. If a cross platform app really paid close enough attention to these things to make a difference, they may as well completely rewrite their UI layer on all platforms.