Check out itch.io's desktop app

[athairus]

Their frontend looks great!

• FOSS (MIT license)
• Uses Electron, we could still utilize the JS code without too much trouble
  • Smooth scrolling works beautifully
• Requires an account to use the app

[chyyran]

If somehow you can get libretro to render to <canvas> with minimal input lag and without having to host emulation in the JavaScript VM, that would be very interesting.

[chyyran]

Or through some NaCl based solution, although I'm not certain on Electron's support for NaCl plugins.