Polymer is a web library, built on top of Web Components, and designed to leverage the evolving web platform on modern browsers.
Ember JS is leading in The Entire Web.
Polymer is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Ember JS has better usage coverage in more websites categories. Including Computers Electronics & Technology, Food & Drink, Science & Education, Finance and 19 other categories.
Polymer is leading in News & Media.
Ember JS is leading in most countries, including United States, United Kingdom, Germany, China and 99 other countries.
Polymer is leading in South Korea, Italy, Turkey, Czech Republic and 20 other countries.