Polymer is a web library, built on top of Web Components, and designed to leverage the evolving web platform on modern browsers.
A lightweight and modular front-end framework for developing fast and powerful web interfaces.
UIKit is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.
In terms of market share, Polymer is clearly lagging behind, losing to UIKit in all segments.
UIKit has better usage coverage in more websites categories. Including Computers Electronics & Technology, Science & Education, Health, Food & Drink and 19 other categories.
Polymer is leading in News & Media.
UIKit is leading in most countries, including United States, Germany, Russia, Italy and 155 other countries.
Polymer hasn't got a lead over UIKit in any country.