Polymer is a web library, built on top of Web Components, and designed to leverage the evolving web platform on modern browsers.
jQuery UI 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 jQuery UI in all segments.
jQuery UI has better usage coverage in more websites categories. Including Science & Education, Computers Electronics & Technology, Health, Travel & Tourism and 20 other categories.
Polymer hasn't got a lead over jQuery UI in any websites category.
jQuery UI is leading in most countries, including United States, Russia, Germany, South Korea and 162 other countries.
Polymer hasn't got a lead over jQuery UI in any country.