I'm far from being an Ember-fan, but it's still going well too, even if it doesn't have as much hype as the two poster boys.

As for Angular, I feel like it's still too early to tell how it will end up - I loved Angular 1.X but eventually switched to React because it was much more convenient and only required minimal boilerplate. Angular 2 doesn't really make we want to switch back in its current state.