Is Foundation or Semantic UI more popular?

Foundation is used by more websites in our catalog: 8,731 use Foundation and 277 use Semantic UI.

Does Foundation or Semantic UI have higher-authority sites?

Semantic UI sites have the higher median Ahrefs Domain Rating (Foundation: 32, Semantic UI: 40).

Is Foundation or Semantic UI growing faster?

Between 2026-06 and 2026-07, Foundation went from 1.1% to 0.99% 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 Foundation and Semantic UI?

3 websites in our catalog use both Foundation and Semantic UI.

Where does this Foundation 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.

Foundation vs Semantic UI — Site Stats Database

Foundation 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	Foundation	Semantic UI
Websites	8,731	277
Market share	4.3%	0.14%
Share of top 10K sites	0.84%	0.02%

Rank	#4	#25

Median DR	32	40

Average DR	34	40

Median keywords	1,025	696

Median referring domains	415	460

Median domain age	17 yrs	15 yrs

Average domain age	17 yrs	15 yrs

Average monthly traffic	69,054	35,212

Combined monthly traffic	602,914,005	9,753,638

patriots.com
LanguageEnglish
DR (Ahrefs)75
Total Keywords143,244
Referring Domains16,324
Domain Age31 yrs
Traffic (Jun 2026)21,987,794
Traffic Trend
TechnologyFoundation
uhaul.com
LanguageEnglish
DR (Ahrefs)82
Total Keywords286,557
Referring Domains21,818
Domain Age31 yrs
Traffic (Jun 2026)20,054,396
Traffic Trend
TechnologyFoundation
nyctourism.com
LanguageEnglish
DR (Ahrefs)80
Total Keywords240,750
Referring Domains21,150
Domain Age27 yrs
Traffic (Jun 2026)16,941,041
Traffic Trend
Technology
uber.com
LanguageEnglish
DR (Ahrefs)91
Total Keywords401,357
Referring Domains121,270
Domain Age30 yrs
Traffic (Jun 2026)14,692,510
Traffic Trend
TechnologyFoundation
texaslottery.com
LanguageEnglish
DR (Ahrefs)80
Total Keywords57,299
Referring Domains7,352
Domain Age26 yrs
Traffic (Jun 2026)12,469,549
Traffic Trend
Technology
photo.walgreens.com
LanguageEnglish
DR (Ahrefs)85
Total Keywords109,015
Referring Domains4,546
Domain Age31 yrs
Traffic (Jun 2026)10,619,614
Traffic Trend
Technology
bandcamp.com
LanguageEnglish
DR (Ahrefs)93
Total Keywords668,672
Referring Domains555,755
Domain Age23 yrs
Traffic (Jun 2026)10,045,944
Traffic Trend
Technology
canvaslms.com
LanguageEnglish
DR (Ahrefs)80
Total Keywords5,426
Referring Domains13,632
Domain Age15 yrs
Traffic (Jun 2026)9,394,607
Traffic Trend
Technology
mapsofworld.com
LanguageEnglish
DR (Ahrefs)70
Total Keywords512,560
Referring Domains28,794
Domain Age26 yrs
Traffic (Jun 2026)8,853,604
Traffic Trend
Technology
visitgreenvillesc.com
LanguageEnglish
DR (Ahrefs)70
Total Keywords41,971
Referring Domains2,959
Domain Age14 yrs
Traffic (Jun 2026)8,191,263
Traffic Trend
Technology

Website	Language	DR (Ahrefs)	Total Keywords	Referring Domains	Domain Age	Traffic (Jun 2026)	Traffic Trend	Technology
patriots.com	English	75	143,244	16,324	31 yrs	21,987,794		Foundation

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
TechnologySemantic UI
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