Market Share by Top Websites

1 Foundation is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 Despite its recent growth, UIKit is still behind Foundation in all market share segments.

Websites Categories

1 Foundation has better usage coverage in more websites categories. Including Science & Education, Computers Electronics & Technology, Health, Arts & Entertainment and 20 other categories.

2 UIKit hasn't got a lead over Foundation in any websites category.


1 Foundation is leading in most countries, including United States, Germany, United Kingdom, Canada and 145 other countries.

2 UIKit is leading in Russia, China, Argentina, Iran and 11 other countries.