I'm bullish on Electron. I think it's just a couple of technical advancements away from being the ultimate desktop toolkit. For context, I love and have worked a ton with Qt, and I much prefer Qt UIs as a user. But Electron has brought true cross-platform development to all platforms (Including Linux!). If it weren't for Electron, I wouldn't even have a bunch of the apps I use today. Hell, I wouldn't have a good IDE,…
That list goes on and on. Don't forget xulrunner. Or heck, even Visix Galaxy! (Ask Jeff Barr about that one some time. ;) )