Flat UI vs Pure: What are the differences?

Developers describe Flat UI as "Free Bootstrap Framework and Theme". Flat UI is a beautiful theme for Bootstrap. We have redesigned many of its components to look flat in every pixel. On the other hand, Pure is detailed as "A set of small, responsive CSS modules that you can use in every web project". Pure is meant to be a starting point for every website or web app. We take care of all the CSS work that every site needs, without making it look cookie-cutter.

Flat UI and Pure can be categorized as "Front-End Frameworks" tools.

Some of the features offered by Flat UI are:

• Bootstrap-based
• Retina Ready Images and Icons
• Custom form components

On the other hand, Pure provides the following key features:

• A responsive grid that can be customized to your needs
• A solid base built on Normalize.css to fix cross-browser compatibility issues
• Consistently styled buttons that work with and elements

Flat UI and Pure are both open source tools. It seems that Pure with 20.1K GitHub stars and 2.07K forks on GitHub has more adoption than Flat UI with 14.5K GitHub stars and 2.46K GitHub forks.