UI frameworks · comparison
Bootstrap vs USWDS
Bootstrap is used on 1,519,038 sites, 1,109 times as many as USWDS (1,370 sites).
In UI frameworks, Bootstrap ranks #1 and USWDS #13 by number of sites.
From Jul 2026 to Oct 2026, Bootstrap grew 0.3% and USWDS grew 0.2%.
257 sites run both: less than 0.1% of Bootstrap sites and 19% of USWDS sites.
Bo
Bootstrap
getbootstrap.com
- Sites
- 1,519,038
- Share of tracked sites
- 9.83%
- Rank in UI frameworks
- #1
- Change since Jul 2026
- ▲ +0.31%
Us
USWDS
designsystem.digital.gov
- Sites
- 1,370
- Share of tracked sites
- 0.01%
- Rank in UI frameworks
- #13
- Change since Jul 2026
- ▲ +0.15%
Sites using both
257
sites run Bootstrap and USWDS
of Bootstrap sites<0.1%
of USWDS sites18.8%
Top sites using Bootstrap
- roszdravnadzor.gov.ru#28,145
- roszdravnadzor.ru#50,147
- egypt.travel#62,813
- torrentbot226.site#155,383
- tnpsc.gov.in#156,333
Often used with Bootstrap
More UI frameworks comparisons
Site counts and ranks come from our crawl of the web; the change compares the monthly adoption snapshots both technologies have.