Redux
Predictable state container for JavaScript apps
Bootstrap.native
If you are looking for Bootstrap without jQuery or vanilla Javascript for Bootstrap, this is the place to get started.
Vuetify
🐉 Material Component Framework for Vue.js 2
Mithril.js
A Javascript Framework for Building Brilliant Applications
Ember
Ember.js is a JavaScript framework that does all of the heavy lifting that you'd normally have to do by hand. There are tasks that are common to every web app; Ember.js does those things for you, so you can focus on building killer features and UI.