I'm using Electron (formerly Atom Shell) for a desktop application. It is a lot of fun to use and event-driven programming has its merits.
I've got all HTML, CSS & JS power at my hands because it uses one of the more recent Chromium builds. I'd like to use UI elements which look similar to the native ones (from OS X in my case).
Is there a UI library imitating the look and functionality of the native UI elements or other ones which fit nicely into such a desktop application?
Photon is a recent project but it is probably what you want. For the moment the UI is only like OSX.
UI toolkit for building desktop apps with Electron.
Link: http://photonkit.com/