Ampersand.js vs Espresso.js: What are the differences?

What is Ampersand.js? 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.

What is Espresso.js? React Meets Backbone for a Minimal MVC. Espresso.js is a tiny MVC framework inspired by Backbone and React with a focus on simplicity and speed. We've aimed to bring the ideas of unidirectional data flow of Flux to a simple, Backbone-style library.

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

Ampersand.js and Espresso.js are both open source tools. It seems that Ampersand.js with 818 GitHub stars and 52 forks on GitHub has more adoption than Espresso.js with 523 GitHub stars and 20 GitHub forks.