Polymer is a web library, built on top of Web Components, and designed to leverage the evolving web platform on modern browsers.
React 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 React JS in all segments.
React JS has better usage coverage in more websites categories. Including Computers Electronics & Technology, Science & Education, Community & Society, Games and 20 other categories.
Polymer hasn't got a lead over React JS in any websites category.
React JS is leading in most countries, including United States, United Kingdom, Canada, France and 162 other countries.
Polymer hasn't got a lead over React JS in any country.