Is Bootstrap or Semantic UI more popular?

Bootstrap is used by more websites in our catalog: 126,851 use Bootstrap and 277 use Semantic UI.

Does Bootstrap or Semantic UI have higher-authority sites?

Semantic UI sites have the higher median Ahrefs Domain Rating (Bootstrap: 29, Semantic UI: 40).

Is Bootstrap or Semantic UI growing faster?

Between 2026-06 and 2026-07, Bootstrap went from 16% to 14% of all tracked sites, while Semantic UI went from 0.04% to 0.03%. Semantic UI is gaining ground faster in our index.

How many sites use both Bootstrap and Semantic UI?

73 websites in our catalog use both Bootstrap and Semantic UI.

Where does this Bootstrap vs Semantic UI data come from?

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.

Bootstrap vs Semantic UI — Site Stats Database

Bootstrap vs Semantic UI

A side-by-side comparison of two ui & css frameworks, based on the 204,967 UI Framework sites tracked by Site Stats Database.

Last updated July 1, 2026

Metric	Bootstrap	Semantic UI
Websites	126,851	277
Market share	62%	0.14%
Share of top 10K sites	9.8%	0.02%

Rank	#1	#25

Median DR	29	40

Average DR	32	40

Median keywords	919	696

Median referring domains	396	460

Median domain age	15 yrs	15 yrs

Average domain age	16 yrs	15 yrs

Average monthly traffic	73,491	35,212

Combined monthly traffic	9,322,399,969	9,753,638

merriam-webster.com
LanguageEnglish
DR (Ahrefs)91
Total Keywords4,579,269
Referring Domains240,838
Domain Age27 yrs
Traffic (Jun 2026)1,467,281,883
Traffic Trend
TechnologyBootstrap
rapidtables.com
LanguageEnglish
DR (Ahrefs)79
Total Keywords410,849
Referring Domains12,076
Domain Age19 yrs
Traffic (Jun 2026)177,772,574
Traffic Trend
Technology
bbc.com
LanguageEnglish
DR (Ahrefs)93
Total Keywords3,887,532
Referring Domains716,813
Domain Age36 yrs
Traffic (Jun 2026)145,867,646
Traffic Trend
TechnologyBootstrap
bestbuy.com
LanguageEnglish
DR (Ahrefs)89
Total Keywords3,771,049
Referring Domains112,318
Domain Age32 yrs
Traffic (Jun 2026)127,973,459
Traffic Trend
Technology
nps.gov
LanguageEnglish
DR (Ahrefs)92
Total Keywords1,563,784
Referring Domains315,622
Domain Age28 yrs
Traffic (Jun 2026)121,452,048
Traffic Trend
TechnologyBootstrap
cdc.gov
LanguageEnglish
DR (Ahrefs)93
Total Keywords1,815,374
Referring Domains779,287
Domain Age28 yrs
Traffic (Jun 2026)118,289,737
Traffic Trend
TechnologyBootstrap
usps.com
LanguageEnglish
DR (Ahrefs)91
Total Keywords571,869
Referring Domains122,171
Domain Age28 yrs
Traffic (Jun 2026)105,769,868
Traffic Trend
TechnologyBootstrap
go.com
LanguageEnglish
DR (Ahrefs)92
Total Keywords913,868
Referring Domains604,602
Domain Age28 yrs
Traffic (Jun 2026)72,794,971
Traffic Trend
TechnologyBootstrap
byjus.com
LanguageEnglish
DR (Ahrefs)80
Total Keywords1,666,559
Referring Domains55,721
Domain Age13 yrs
Traffic (Jun 2026)65,601,851
Traffic Trend
Technology
footballdb.com
LanguageEnglish
DR (Ahrefs)55
Total Keywords264,264
Referring Domains3,634
Domain Age23 yrs
Traffic (Jun 2026)54,434,822
Traffic Trend
Technology

Website	Language	DR (Ahrefs)	Total Keywords	Referring Domains	Domain Age	Traffic (Jun 2026)	Traffic Trend	Technology
merriam-webster.com	English	91	4,579,269	240,838	27 yrs	1,467,281,883		Bootstrap

broadwayinchicago.com
LanguageEnglish
DR (Ahrefs)63
Total Keywords18,716
Referring Domains3,635
Domain Age26 yrs
Traffic (Jun 2026)1,079,179
Traffic Trend
TechnologySemantic UI
preferredhotels.com
LanguageEnglish
DR (Ahrefs)75
Total Keywords53,301
Referring Domains5,848
Domain Age30 yrs
Traffic (Jun 2026)1,032,307
Traffic Trend
Technology
fit.edu
LanguageEnglish
DR (Ahrefs)77
Total Keywords52,633
Referring Domains16,623
Domain Age37 yrs
Traffic (Jun 2026)704,919
Traffic Trend
TechnologySemantic UI
aerospaceutah.org
LanguageEnglish
DR (Ahrefs)46
Total Keywords9,025
Referring Domains706
Domain Age13 yrs
Traffic (Jun 2026)597,521
Traffic Trend
Technology
focus.pcsb.org
Language
DR (Ahrefs)68
Total Keywords510
Referring Domains61
Domain Age26 yrs
Traffic (Jun 2026)434,748
Traffic Trend
Technology
mshsaa.org
LanguageEnglish
DR (Ahrefs)64
Total Keywords23,259
Referring Domains2,660
Domain Age26 yrs
Traffic (Jun 2026)315,665
Traffic Trend
Technology
lee.focusschoolsoftware.com
Language
DR (Ahrefs)56
Total Keywords536
Referring Domains72
Domain Age18 yrs
Traffic (Jun 2026)280,650
Traffic Trend
Technology
oldhousegardens.com
LanguageEnglish
DR (Ahrefs)44
Total Keywords10,171
Referring Domains1,295
Domain Age27 yrs
Traffic (Jun 2026)192,501
Traffic Trend
Technology
sis.palmbeachschools.org
LanguageEnglish
DR (Ahrefs)71
Total Keywords365
Referring Domains28
Domain Age24 yrs
Traffic (Jun 2026)181,814
Traffic Trend
Technology
tacobueno.com
LanguageEnglish
DR (Ahrefs)40
Total Keywords6,460
Referring Domains1,479
Domain Age23 yrs
Traffic (Jun 2026)176,661
Traffic Trend
Technology