Material UI vs. Foundation for Apps vs. Flakes

Material-UI is a CSS framework and a set of React components that implement Google's Material Design specification.

Foundation for Apps is a framework you can use to build better, more polished single-page web applications that work across many devices. We’ve taken what we’ve learned from building the original Foundation framework to build an entirely new framework just for web apps.

Flakes is an Admin Template Framework. A combination of CSS Libraries, JavaScript Libraries and Design files that help you build business tools very quickly.