PageSourceSearch / Technologies / UI libraries and CSS / PatternFly UI libraries and CSS
Websites using PatternFly
PatternFly is Red Hat's open-source design system for enterprise products.
About 29,583 websites in the PageSourceSearch index contain the code that reveals it; the 50 highest-ranked are listed below.
How is PatternFly detected?
PatternFly components render classes such as pf-v5-c-button or pf-c-page (PatternFly 4). The discovery keyword is the exact bytes PageSourceSearch looks for in every stored page and script:
class="pf-(v[56]-)?c- regex Search the index for it
A literal is matched byte for byte, case-sensitively. Combine it with another keyword, a domain, a kind or a date filter on the search page to narrow the list. About PatternFly
Top 50 websites using PatternFly
Ranked by the domain's position in the crawl's ranked list (Common Crawl harmonic centrality), highest first. view source opens the stored page or script with the match highlighted. Computed 2026-10-12 02:08:19 UTC.
# Website Rank Found in
1
doubleverify.com 4,105
html https://dv-ciam.doubleverify.com/rea…e_challenge_method=S256
view source profile
2
gasa.org 5,753
html https://id.gasa.org/realms/master/pr…0QXhFT2plUWNXUHpBIn0%3D
view source profile
3
m3aawg.org 5,929
html https://auth.m3aawg.org/realms/m3aaw…cUWMdJYSeTuzZ1saLlFGWv4
view source profile
4
ecmwf.int 8,894
html https://accounts.ecmwf.int/auth/real…RZuWnsM_PBKbxr6Usvpy2So
view source profile
5
serpro.gov.br 9,379
html https://login.serpro.gov.br/auth/rea…VqQcqrL0ryXqCEUYRKPIs6w
view source profile
6
spe.org 14,434
html https://www.spe.org/auth/realms/SPE/…Vte4o0JakFODlQnvMw5BMq8
view source profile
7
klicktipp.com 22,718
html https://auth.klicktipp.com/realms/kl…&scope=email%20openid
view source profile
8
unibw.de 24,030
html https://auth.unibw.de/realms/id/prot…users%2Foidc%2Fcallback
view source profile
9
barcelonactiva.cat 26,724
html https://sso.barcelonactiva.cat:8443/…=true&scope=openid
view source profile
10
geidea.net 28,999
js https://api.ksamerchant.geidea.net/a…/validation-message.js
view source profile
11
myschoolbucks.com 30,382
html https://login.myschoolbucks.com/auth…=MySchoolBucksWeb
view source profile
12
ignatius.com 32,526
html https://id.ignatius.com/realms/ignat…2Fcvc90x9929%2Fcallback
view source profile
13
euromathsoc.org 33,051
html https://keycloak.euromathsoc.org/rea…BqI7QgYYcdud04X_GQp_TuA
view source profile
14
bundes-verlag.net 34,275
html https://sso.bundes-verlag.net/auth/r…jqVsKWkmSROsue18A%3D%3D
view source profile
15
salonelibro.it 40,373
html https://accounts.salonelibro.it/auth…=S256&kc_locale=it
view source profile
16
travisperkins.co.uk 41,999
html https://www.travisperkins.co.uk/login
view source profile
17
myliaison.com 44,034
html https://auth.myliaison.com/realms/lp…=rEa-rcPYWkNtfk58eA4j7w
view source profile
18
ampmetropole.fr 44,558
html https://appsso.ampmetropole.fr/auth/…penid-connect-authorize
view source profile
19
gpsnauticalcharts.com 45,880
html https://www.gpsnauticalcharts.com/my…/authorize&scope=openid
view source profile
20
herthabsc.com 49,411
html https://sso.herthabsc.com/auth/realm…&scope=openid
view source profile
21
onetick.com 67,237
html https://cloud-auth.parent.onetick.co…03251d70c79efe8b4066b3d
view source profile
22
biedronka.pl 71,795
html https://konto.biedronka.pl/realms/lo…=moja-biedronka
view source profile
23
turismoriasbaixas.com 82,975
html https://sso.turismoriasbaixas.com/re…cas8ro4o8mFDPk9kO3j8z1Y
view source profile
24
nautique.ch 95,783
html https://auth.nautique.ch/realms/sng-…penid-connect-authorize
view source profile
25
vtv.gov.vn 96,816
html https://sso.vtv.gov.vn/auth/realms/v…=true&scope=openid
view source profile
26
m-net.de 108,009
html https://auth-portale.m-net.de/realms…&client_id=eos-login
view source profile
27
goglides.dev 123,276
html https://login.goglides.dev/realms/go…e_challenge_method=S256
view source profile
28
tauron-dystrybucja.pl 123,914
html https://logowanie.tauron-dystrybucja…k.tauron-dystrybucja.pl
view source profile
29
positiveaction.net 141,420
js https://auth.positiveaction.net/stat…owInterface-2025.8.4.js
view source profile
30
sbroker.de 152,728
html https://api.sbroker.de/realms/sbroke…auth2%2Fcode%2Fkeycloak
view source profile
31
nomercy.tv 170,125
html https://auth.nomercy.tv/realms/NoMer…YljSBdiqqYrU6VLmNUFQfai
view source profile
32
encycam.com 194,708
html https://webservices.encycam.com/keyc…penid-connect-authorize
view source profile
33
enna.care 200,416
html https://auth.enna.care/realms/enna/p…penid-connect-authorize
view source profile
34
omhgrandnancy.fr 249,711
html https://sso-extranet.omhgrandnancy.f…N5%2BErkgL746spOySUY%3D
view source profile
35
insiderpie.de 253,489
html https://platform.insiderpie.de/realm…h0H0NwYa2wSlkf0zwQPgvNM
view source profile
36
topdev.de 276,495
html https://topdev.de/auth/realms/topdev…5a043599751bfeea2a8abec
view source profile
37
prepuptime.com 348,658
html https://id.prepuptime.com/admin/master/console/
view source profile
38
josefridky.cz 359,070
html https://josefridky.cz/
view source profile
39
tjsc.jus.br 397,747
html https://sso.tjsc.jus.br/realms/tjsc/…dPnxFjJN2MlkITz-L37zCdE
view source profile
40
iffr.com 403,739
html https://login.iffr.com/realms/iffr/p…penid-connect-authorize
view source profile
41
dcbar.org 414,369
html https://login.dcbar.org/realms/dcbar…FmY4iwLqZYFBmDKTg%3D%3D
view source profile
42
oebv.at 416,861
html https://identity.dc.oebv.at/realms/o…e_challenge_method=S256
view source profile
43
opendesign.com 431,473
html https://sso.opendesign.com/realms/od…sign.com%2Fsaml%2Flogin
view source profile
44
optibelt.com 435,888
html https://sso.optibelt.com/auth/realms…&client_id=valantic
view source profile
45
lisboaparticipa.pt 441,009
html https://auth.lisboaparticipa.pt/real…14d351af4a0031bd1e3de66
view source profile
46
uniforlife.at 442,185
html https://login.uniforlife.at/auth/rea…=email+profile+openid
view source profile
47
ega-archive.org 453,541
html https://idp.ega-archive.org/realms/E…_6DhjVQIkaIAnrE&state=0
view source profile
48
nexperia.com 459,810
html https://login.nexperia.com//realms/n…&prompt=login
view source profile
49
nationalfile.com 462,118
html https://idp.nationalfile.com/realms/…=yqj0nRCp4IyeW0kw03_Rhw
view source profile
50
mitos.gov.gr 463,233
html https://login.mitos.gov.gr/realms/em…&scope=openid
view source profile
How it appears in the source
From doubleverify.com (html):
</head> <body class="" data-page-id="login-login"> <div id="dv-login-layout" class="pf-v5-c-login__main dv-login-with-side-panel"> <div id="kc-header" class="dv-kc-header-login"
See every site: search for class="pf-(v[56]-)?c-
Questions about finding PatternFly
How does PageSourceSearch know a website uses PatternFly?
By the source itself: PatternFly components render classes such as pf-v5-c-button or pf-c-page (PatternFly 4). PageSourceSearch stores the raw HTML and first-party JavaScript of each crawled site and matches the keyword byte for byte, so every listed site's stored source contains it.
Is this a complete list of websites using PatternFly?
No. The page lists the 50 highest-ranked sites in the index whose source holds the keyword, out of about 29,583 websites that do; the count is the index's estimate at the time the list was computed. Run the keyword as a search to page through all of them, or add a kind or date filter.
How do I find websites that use PatternFly together with another technology?
Search for both keywords at once: several terms separated by spaces must all be found on the same site, or with the Same page toggle in the same page. For example class="pf-(v[56]-)?c- with wp-content/plugins/ lists the WordPress sites that use PatternFly.