Ampersand.js vs Chaplin: What are the differences?

Developers describe Ampersand.js as "A highly modular, loosely coupled, non-frameworky framework for building advanced JavaScript apps". 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. On the other hand, Chaplin is detailed as "HTML5 application architecture using Backbone.js". Chaplin addresses Backbone’s limitations by providing a lightweight and flexible structure that features well-proven design patterns and best practices. Chaplin empowers you to quickly develop scalable single-page web applications; allowing you to focus on designing and developing the underlying functionality in your web application.

Ampersand.js and Chaplin belong to "Javascript MVC Frameworks" category of the tech stack.

Ampersand.js and Chaplin are both open source tools. It seems that Chaplin with 2.92K GitHub stars and 247 forks on GitHub has more adoption than Ampersand.js with 818 GitHub stars and 52 GitHub forks.