I’m sorry, but the list of Meteor alternatives are absolute bullshit. “Just use Websockets” or “use RethinkDB”. That’s like saying “just use node.js”.
Meteor is an application platform, not just a web framework. If you’re not happy with it, I suggest you write you own solution using Express, Browserify, RethinkDB, Socket.io, Passport etc. but I guarantee you it still won’t be as easy to use as Meteor.