Websites Powered by ZK
638 websites tracked using ZK (Web frameworks) · zkoss.org
ZK is a web application framework used to build the site's backend. Its official site is zkoss.org. PoweredBy tracks the websites that use ZK across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the web frameworks ecosystem.
Usage trend
100
200
300
400
Apr 2018
May 2020
May 2022
Jun 2024
Jun 2026
Domains observed using ZK in each month's HTTP Archive crawl,
Apr 2018 to Jun 2026 · peak 306 in Aug 2022. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 2 s
INP 75 ms
CLS 0
TTFB 600 ms
Median site among 483 ZK sites with Chrome UX data, p75 values, Jun 2026.
Top countries
United States
161
Brazil
111
Germany
107
Italy
104
Spain
92
Indonesia
90
United Kingdom
88
France
86
Sites using ZK by audience country, Chrome UX Report.
Top sites by authority
9+
0% · 0 of 372 sites
8+
<1% · 8 of 7,677 sites
7+
<1% · 27 of 45,712 sites
6+
<1% · 47 of 110,136 sites
5+
<1% · 66 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running ZK in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using ZK
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1 | umn.edu | 8.96/10 | 78 | 49 | Feb 2023 |
| 2 | niedersachsen.de | 8.65/10 | 49 | 98 | Mar 2024 |
| 3 | gva.es | 8.47/10 | 490 | 1,924 | Jan 2019 |
| 4 | unil.ch | 8.47/10 | 2,600 | 1,615 | Aug 2018 |
| 5 | sebrae.com.br | 8.32/10 | 1,800 | 3,151 | Aug 2018 |
| 6 | uba.ar | 8.21/10 | 670 | 586 | Oct 2020 |
| 7 | ufba.br | 8.04/10 | 99 | 104 | May 2026 |
| 8 | rajasthan.gov.in | 8.01/10 | 3,100 | 236 | Aug 2018 |
| 9 | regione.piemonte.it | 7.96/10 | 450 | 1,080 | Feb 2020 |
| 10 | regione.veneto.it | 7.95/10 | 110 | 339 | Feb 2022 |
| 11 | lwl.org | 7.92/10 | 110 | 383 | Mar 2026 |
| 12 | duckdns.org | 7.86/10 | 150 | 511 | Mar 2026 |
| 13 | regione.lazio.it | 7.78/10 | 270 | 609 | Aug 2018 |
| 14 | kemenkeu.go.id | 7.78/10 | 890 | 354 | May 2024 |
| 15 | pucpr.br | 7.52/10 | 300 | 464 | Dec 2020 |
| 16 | sbi.bank.in | 7.48/10 | 11,100 | 2,000 | Nov 2025 |
| 17 | ufv.br | 7.47/10 | 68 | 68 | Apr 2026 |
| 18 | vmi.lt | 7.46/10 | 640 | 406 | Aug 2018 |
| 19 | yok.gov.tr | 7.44/10 | 240 | 89 | Aug 2018 |
| 20 | lcsd.gov.hk | 7.42/10 | 4,500 | 1,795 | Aug 2018 |
| 21 | moit.gov.vn | 7.40/10 | 560 | 1,086 | Aug 2018 |
| 22 | kemendikdasmen.go.id | 7.38/10 | 60 | 213 | Jun 2026 |
| 23 | pbh.gov.br | 7.33/10 | - | 6 | Jul 2024 |
| 24 | tennis.de | 7.30/10 | 270 | 756 | Apr 2024 |
| 25 | minagric.gr | 7.02/10 | 22 | 94 | Dec 2020 |
| 26 | mendoza.gov.ar | 7.02/10 | 2,300 | 4,067 | Dec 2020 |
| 27 | uinjkt.ac.id | 7.02/10 | 150 | 235 | Aug 2018 |
| 28 | dypa.gov.gr | 6.84/10 | 97 | 174 | Aug 2025 |
| 29 | comune.parma.it | 6.71/10 | 460 | 336 | Oct 2023 |
| 30 | imt-ip.pt | 6.70/10 | 28 | 45 | May 2023 |
| 31 | danang.gov.vn | 6.53/10 | 550 | 1,418 | Apr 2020 |
| 32 | upaep.mx | 6.50/10 | 460 | 421 | Aug 2018 |
| 33 | belavia.by | 6.46/10 | 240 | 21 | Feb 2020 |
| 34 | pointclickcare.com | 6.39/10 | 109,500 | 9,990 | Aug 2018 |
| 35 | icici.bank.in | 6.39/10 | 44,800 | 1,962 | May 2026 |
| 36 | myrealtyonegroup.com | 6.37/10 | - | - | Aug 2022 |
| 37 | compass-usa.com | 6.29/10 | 33,100 | 37,544 | Dec 2020 |
| 38 | vivacom.bg | 6.27/10 | 290 | 105 | Aug 2018 |
| 39 | pami.org.ar | 6.24/10 | 830 | 4,985 | Aug 2018 |
| 40 | unespar.edu.br | 6.24/10 | - | 1 | Apr 2025 |
| 41 | usd.ac.id | 6.24/10 | 610 | 66 | Aug 2018 |
| 42 | nbnatlas.org | 6.22/10 | 3 | 17 | Dec 2020 |
| 43 | payulatam.com | 6.18/10 | - | - | Aug 2018 |
| 44 | mga.edu | 6.18/10 | 132,100 | 34,570 | Jun 2026 |
| 45 | artdatabanken.se | 6.17/10 | - | - | Nov 2022 |
| 46 | gde.gob.ar | 2.70/10 | - | - | Sep 2018 |
| 47 | mgapp.mg.gov.br | 2.40/10 | - | - | Feb 2019 |
| 48 | prodemge.gov.br | 5.80/10 | 360 | 25 | Apr 2020 |
| 49 | ellisbank.com | 0.46/10 | - | - | Aug 2018 |
| 50 | ghaportal.id | - | - | - | Mar 2025 |
| 51 | gutouch.com | 1.22/10 | - | - | Aug 2022 |
| 52 | halal.go.id | 5.41/10 | - | - | Dec 2025 |
| 53 | jpj.gov.my | 5.88/10 | 500 | 363 | Aug 2018 |
| 54 | ktimatologio.gr | 5.93/10 | 270 | 110 | Aug 2024 |
| 55 | lrmuitine.lt | 5.79/10 | 44 | 39 | Aug 2023 |
| 56 | mattran.vn | 0.61/10 | - | - | Nov 2025 |
| 57 | porthouston.com | 5.90/10 | 26,600 | 7,343 | Sep 2024 |
| 58 | relojcontrol.com | 0.43/10 | - | - | Aug 2018 |
| 59 | scat.kz | 5.27/10 | 460 | 522 | Aug 2018 |
| 60 | sde.gob.ar | 3.86/10 | - | - | Jun 2021 |
| 61 | vatzum.lt | 4.03/10 | - | - | Jul 2021 |
| 62 | vcalc.com | 3.95/10 | - | - | Nov 2019 |
| 63 | wcaney.com | - | - | - | Aug 2024 |
| 64 | 1slconline.net | 0.24/10 | - | - | Apr 2026 |
| 65 | adma.qc.ca | 3.53/10 | - | - | Apr 2024 |
| 66 | adoptastray.gov.gr | 1.81/10 | - | - | Jul 2024 |
| 67 | adpartner.cz | 2.36/10 | - | - | Aug 2022 |
| 68 | aero.kg | 3.95/10 | - | - | Sep 2022 |
| 69 | agcba.gov.ar | 2.50/10 | - | - | Jun 2024 |
| 70 | agirsaude.org.br | 2.72/10 | - | - | May 2025 |
| 71 | agroros.ru | 3.01/10 | - | - | Dec 2021 |
| 72 | albank.ru | 3.92/10 | - | - | Aug 2018 |
| 73 | aljt.com | 3.67/10 | - | - | Aug 2018 |
| 74 | amarainter.com | 0.62/10 | - | - | Mar 2023 |
| 75 | anai.edu.ec | 1.68/10 | - | - | Sep 2022 |
| 76 | apolitecnica.ac.mz | 1.88/10 | - | - | Jan 2025 |
| 77 | apptricityondemand.com | 0.42/10 | - | - | Aug 2022 |
| 78 | askrida.co.id | - | - | - | May 2023 |
| 79 | atzgersdorf.info | 1.53/10 | - | - | May 2019 |
| 80 | baltichub.com | 3.14/10 | - | - | Jul 2023 |
| 81 | bankaceh.co.id | 2.02/10 | - | - | Dec 2020 |
| 82 | bankntbsyariah.co.id | 1.67/10 | - | - | Jul 2021 |
| 83 | banksumut.co.id | 1.86/10 | - | - | Aug 2023 |
| 84 | bcepharma.com | 1.18/10 | - | - | May 2024 |
| 85 | bhu.edu.in | 2.31/10 | - | - | May 2020 |
| 86 | bilsport.no | 3.57/10 | - | - | Feb 2026 |
| 87 | biopan.com.mx | - | - | - | Mar 2023 |
| 88 | bisi.co.id | 1.88/10 | - | - | May 2026 |
| 89 | bvhttdl.gov.vn | 5.95/10 | 470 | 2,039 | Dec 2020 |
| 90 | cagef.mg.gov.br | 3.50/10 | - | - | Feb 2019 |
| 91 | campogrande.ms.gov.br | 6.02/10 | 18 | 56 | Apr 2019 |
| 92 | cbprospectsquare.com | 3.32/10 | - | - | Aug 2022 |
| 93 | cccargas.com.ar | 0.27/10 | - | - | Jun 2025 |
| 94 | cdcservizi.it | 1.61/10 | - | - | Mar 2022 |
| 95 | cimb.com | 5.16/10 | 360 | 275 | Feb 2025 |
| 96 | ciudaddemendoza.gob.ar | 4.12/10 | - | - | Oct 2025 |
| 97 | conectarep.com.br | - | - | - | Jul 2025 |
| 98 | connexence.com | 2.46/10 | - | - | Jan 2019 |
| 99 | cp.co.id | 3.17/10 | - | - | Aug 2022 |
| 100 | danberryondeck.com | - | - | - | Jun 2025 |
Open Page Rank is the domain's authority score (0 to 10, from the open web link graph); the list is ordered by it and covers sites seen in recent crawls. Visits and keywords are estimated US organic search figures.
Download top 10,000 as CSV (zip) →