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 13,206 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 2026-10-01 03:08:55 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…0ASObD9KS34ReMl5UQO6j4c
view source profile
4
serpro.gov.br 9,379
html https://login.serpro.gov.br/auth/rea…VqQcqrL0ryXqCEUYRKPIs6w
view source profile
5
klicktipp.com 22,718
html https://auth.klicktipp.com/realms/kl…&scope=email%20openid
view source profile
6
unibw.de 24,030
html https://auth.unibw.de/realms/id/prot…users%2Foidc%2Fcallback
view source profile
7
barcelonactiva.cat 26,724
html https://sso.barcelonactiva.cat:8443/…=true&scope=openid
view source profile
8
geidea.net 28,999
js https://api.ksamerchant.geidea.net/a…/validation-message.js
view source profile
9
myschoolbucks.com 30,382
html https://login.myschoolbucks.com/auth…=MySchoolBucksWeb
view source profile
10
euromathsoc.org 33,051
html https://keycloak.euromathsoc.org/rea…BqI7QgYYcdud04X_GQp_TuA
view source profile
11
bundes-verlag.net 34,275
html https://sso.bundes-verlag.net/auth/r…LuJVUNI8cGMJAh41Q%3D%3D
view source profile
12
salonelibro.it 40,373
html https://accounts.salonelibro.it/auth…=S256&kc_locale=it
view source profile
13
travisperkins.co.uk 41,999
html https://www.travisperkins.co.uk/login
view source profile
14
ampmetropole.fr 44,558
html https://appsso.ampmetropole.fr/auth/…penid-connect-authorize
view source profile
15
gpsnauticalcharts.com 45,880
html https://www.gpsnauticalcharts.com/my…/authorize&scope=openid
view source profile
16
herthabsc.com 49,411
html https://sso.herthabsc.com/auth/realm…&scope=openid
view source profile
17
onetick.com 67,237
html https://cloud-auth.parent.onetick.co…03251d70c79efe8b4066b3d
view source profile
18
biedronka.pl 71,795
html https://konto.biedronka.pl/realms/lo…=moja-biedronka
view source profile
19
nautique.ch 95,783
html https://auth.nautique.ch/realms/sng-…penid-connect-authorize
view source profile
20
vtv.gov.vn 96,816
html https://sso.vtv.gov.vn/auth/realms/v…=true&scope=openid
view source profile
21
m-net.de 108,009
html https://auth-portale.m-net.de/realms…&client_id=eos-login
view source profile
22
tauron-dystrybucja.pl 123,914
html https://logowanie.tauron-dystrybucja…k.tauron-dystrybucja.pl
view source profile
23
positiveaction.net 141,420
js https://auth.positiveaction.net/stat…owInterface-2025.8.4.js
view source profile
24
sbroker.de 152,728
html https://api.sbroker.de/realms/sbroke…auth2%2Fcode%2Fkeycloak
view source profile
25
nomercy.tv 170,125
html https://auth.nomercy.tv/realms/NoMer…YljSBdiqqYrU6VLmNUFQfai
view source profile
26
enna.care 200,416
html https://auth.enna.care/realms/enna/p…penid-connect-authorize
view source profile
27
omhgrandnancy.fr 249,711
html https://sso-extranet.omhgrandnancy.f…N5%2BErkgL746spOySUY%3D
view source profile
28
insiderpie.de 253,489
html https://platform.insiderpie.de/realm…WtKV9I96gfetcyPuf_VeM5U
view source profile
29
topdev.de 276,495
html https://topdev.de/auth/realms/topdev…2214345aa79964b8e3f3f4a
view source profile
30
prepuptime.com 348,658
html https://id.prepuptime.com/admin/master/console/
view source profile
31
josefridky.cz 359,070
html https://josefridky.cz/
view source profile
32
tjsc.jus.br 397,747
html https://sso.tjsc.jus.br/realms/tjsc/…dPnxFjJN2MlkITz-L37zCdE
view source profile
33
iffr.com 403,739
html https://login.iffr.com/realms/iffr/p…penid-connect-authorize
view source profile
34
oebv.at 416,861
html https://identity.dc.oebv.at/realms/o…e_challenge_method=S256
view source profile
35
optibelt.com 435,888
html https://sso.optibelt.com/auth/realms…&client_id=valantic
view source profile
36
lisboaparticipa.pt 441,009
html https://auth.lisboaparticipa.pt/real…14d351af4a0031bd1e3de66
view source profile
37
uniforlife.at 442,185
html https://login.uniforlife.at/auth/rea…=email+profile+openid
view source profile
38
ega-archive.org 453,541
html https://idp.ega-archive.org/realms/E…4MFuwpat8wc2Nfw&state=0
view source profile
39
nexperia.com 459,810
html https://login.nexperia.com//realms/n…&prompt=login
view source profile
40
mitos.gov.gr 463,233
html https://login.mitos.gov.gr/realms/em…&scope=openid
view source profile
41
agirpourlenvironnement.org 473,563
html https://iam.agirpourlenvironnement.org/realms/ape/account/
view source profile
42
potatopro.com 504,881
html https://auth.potatopro.com/realms/po…G9S4mytpZw3nLm6AlrenOMc
view source profile
43
gotohui.com 505,670
js https://www.gotohui.com/static/js/platform.js?v=1.12.11
view source profile
44
oerworldmap.org 507,356
html https://oerworldmap.org/auth/realms/…e_challenge_method=S256
view source profile
45
wien-ticket.at 520,890
html https://auth.wien-ticket.at/realms/w…TRyxaD47noASbQYSJuZ08KU
view source profile
46
acffiorentina.com 521,945
html https://myfiorentina.acffiorentina.c…&x-client-ver=8.22.0.0
view source profile
47
tekna.no 551,318
html https://auth.tekna.no/realms/tekna/p…&x-client-ver=7.0.3.0
view source profile
48
ekz.ch 552,375
html https://login.ekz.ch/auth/realms/myE…MX4cnlDpfGJKXQu5OT-dxjk
view source profile
49
abu.org.my 555,288
html https://sso.abu.org.my/realms/abu-ss…penid-connect-authorize
view source profile
50
withodyssey.com 584,296
html https://auth.withodyssey.com/realms/…oKBX5xVkUcyu6aPmrts7lO8
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 13,206 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.