Bootstrap vs UIkit

Bootstrap is used by more websites in our catalog: 126,851 use Bootstrap and 5,433 use UIkit.

Bootstrap sites have the higher median Ahrefs Domain Rating (Bootstrap: 29, UIkit: 26).

Between 2026-06 and 2026-07, Bootstrap went from 16% to 14% of all tracked sites, while UIkit went from 0.56% to 0.62%. UIkit is gaining ground faster in our index.

1,647 websites in our catalog use both Bootstrap and UIkit.

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.