I've had good results with: http://ember-simple-auth.simplabs.com/ in Ember, though most of what it's good at is managing the session on the client-side.
We discussed dropping Torii's simple session manager in favor of recommending Simple Auth, but after discussing it with @marcoow decided we had slightly different goals. Torii's session manager imposes structure and terminology on your code, but had no specific conventions around how to pass request authorization to API calls, how to store a session, etc.
