Polymer is a web library, built on top of Web Components, and designed to leverage the evolving web platform on modern browsers.
Raven.js 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 Raven.js in all segments.
Raven.js has better usage coverage in more websites categories. Including Computers Electronics & Technology, Travel & Tourism, Science & Education, Finance and 19 other categories.
Polymer is leading in News & Media.
Raven.js is leading in most countries, including United States, Russia, United Kingdom, China and 154 other countries.
Polymer is leading in Cuba and Somalia.