Mithril vs. Ampersand.js vs. Ember.js

Mithril is around 12kb gzipped thanks to its small, focused, API. It provides a templating engine with a virtual DOM diff implementation for performant rendering, utilities for high-level modelling via functional composition, as well as support for routing and componentization.

We <3 Backbone.js at &yet. It’s brilliantly simple and solves many common problems in developing clientside applications. But we missed the focused simplicity of tiny modules in node-land. We wanted something similar in style and philosophy, but that fully embraced tiny modules, npm, and browserify. Ampersand.js is a well-defined approach to combining (get it?) a series of intentionally tiny modules.

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.