jQuery Mobile vs. Classy vs. Reapp

jQuery Mobile is a HTML5-based user interface system designed to make responsive web sites and apps that are accessible on all smartphone, tablet and desktop devices.

Not CSS. Instead of trying to force UIKit to fit CSS syntax, properties, conventions and constructs. Classy is a stylesheet system built from the ground up to work in harmony with UIKit. It borrows the best ideas from CSS and introduces new syntax, conventions and constructs where appropriate.

Reapp is everything you need to build amazing apps with React: a collection of packages that work together, our UI kit, and a CLI that scaffolds your app and includes a server and build system.