Websites Powered by Flat UI
3,485 websites tracked using Flat UI (UI frameworks) · designmodo.github.io
Flat UI is a UI/CSS framework used to style and lay out the site. Its official site is designmodo.github.io. PoweredBy tracks the websites that use Flat UI across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the ui frameworks ecosystem.
Usage trend
500
1K
1.5K
Apr 2018
May 2020
Jul 2022
Aug 2024
Sep 2026
Domains observed using Flat UI in each month's HTTP Archive crawl,
Apr 2018 to Sep 2026 · peak 1,371 in Nov 2022. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 2 s
INP 75 ms
CLS 0
TTFB 900 ms
Median site among 1,069 Flat UI sites with Chrome UX data, p75 values, Sep 2026.
Top countries
United States
311
United Kingdom
219
India
205
Germany
145
Spain
145
Canada
133
Italy
131
France
120
Sites using Flat UI by audience country, Chrome UX Report.
Usage by industry
| Industry | Share | Websites |
|---|---|---|
| Education | 0.01% | 7 |
| Government | 0.01% | 1 |
| Arts and entertainment | 0.01% | 5 |
| Professional services | <0.01% | 2 |
| Legal | <0.01% | 1 |
| Blogs and publishing | <0.01% | 1 |
| Beauty and wellness | <0.01% | 1 |
| Real estate | <0.01% | 1 |
| Healthcare | <0.01% | 1 |
| Retail | <0.01% | 2 |
Share of each industry's websites with a detected stack that use Flat UI; industries come from what sites declare in their own structured data.
Top sites by authority
9+
<1% · 1 of 372 sites
8+
<1% · 14 of 7,677 sites
7+
<1% · 26 of 45,712 sites
6+
<1% · 35 of 110,136 sites
5+
<1% · 50 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running Flat UI in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using Flat UI
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1 | free.fr | 9.05/10 | 3,400 | 1,262 | Mar 2023 |
| 2 | datatables.net | 8.96/10 | 5,000 | 8,051 | Aug 2018 |
| 3 | sakura.ne.jp | 8.95/10 | - | - | May 2023 |
| 4 | it.com | 8.81/10 | - | - | Oct 2025 |
| 5 | virginia.edu | 8.73/10 | 265,100 | 10,889 | Jan 2023 |
| 6 | ub.edu | 8.62/10 | 11,300 | 24,177 | Jul 2023 |
| 7 | uconn.edu | 8.54/10 | 119,900 | 7,548 | Dec 2019 |
| 8 | nebraska.gov | 8.52/10 | 97,200 | 24,299 | Jun 2016 |
| 9 | sapo.pt | 8.49/10 | 10,100 | 29,601 | May 2021 |
| 10 | ne.gov | 8.36/10 | 130 | 196 | May 2017 |
| 11 | ufsc.br | 8.22/10 | 120 | 86 | Jul 2019 |
| 12 | telefonica.com | 8.14/10 | 36,300 | 15,597 | Jan 2021 |
| 13 | auth.gr | 8.11/10 | 1,900 | 302 | Mar 2023 |
| 14 | cgdev.org | 8.01/10 | 22,100 | 14,444 | Mar 2025 |
| 15 | health.gov.lk | 7.99/10 | 1,000 | 1,345 | Jun 2020 |
| 16 | ovgu.de | 7.85/10 | 1,700 | 376 | Jul 2019 |
| 17 | upatras.gr | 7.85/10 | 290 | 93 | Aug 2023 |
| 18 | bihar.gov.in | 7.69/10 | - | - | Apr 2026 |
| 19 | zhp.pl | 7.53/10 | 35 | 46 | Aug 2018 |
| 20 | ur-net.go.jp | 7.45/10 | 160 | 106 | Nov 2024 |
| 21 | fh-dortmund.de | 7.41/10 | 130 | 189 | Aug 2022 |
| 22 | telix.pl | 7.38/10 | 35 | 67 | Jun 2020 |
| 23 | unicam.it | 7.31/10 | 19 | 71 | Dec 2023 |
| 24 | cedr.com | 7.27/10 | 1,500 | 387 | Sep 2021 |
| 25 | openrouteservice.org | 7.02/10 | 1,100 | 2,296 | Mar 2018 |
| 26 | pom.go.id | 7.02/10 | 250 | 241 | Feb 2020 |
| 27 | easyspace.com | 6.98/10 | 620 | 310 | Aug 2018 |
| 28 | unsrat.ac.id | 6.96/10 | 9 | 43 | Jul 2026 |
| 29 | bjtu.edu.cn | 6.73/10 | 9 | 3 | Mar 2026 |
| 30 | cotec.es | 6.73/10 | 2 | 13 | Jul 2024 |
| 31 | tcu.es | 6.63/10 | 16 | 115 | Aug 2018 |
| 32 | eventscase.com | 6.61/10 | 320 | 623 | Aug 2018 |
| 33 | mgpu.ru | 6.25/10 | 13 | 26 | Apr 2019 |
| 34 | cimat.mx | 6.08/10 | 3,000 | 2,792 | Feb 2024 |
| 35 | iiserkol.ac.in | 6.03/10 | 260 | 225 | Aug 2018 |
| 36 | www.gt | 5.91/10 | 60 | 14 | Aug 2018 |
| 37 | mediwietsite.nl | 5.88/10 | - | 17 | Aug 2017 |
| 38 | opencellid.org | 5.74/10 | 2,900 | 212 | May 2017 |
| 39 | visualarts.net.au | 5.71/10 | 420 | 297 | Aug 2018 |
| 40 | citydata.in.th | 5.60/10 | 160 | 76 | Mar 2022 |
| 41 | imagejournal.org | 5.57/10 | 20,500 | 5,725 | Aug 2018 |
| 42 | atlasofscience.org | 5.48/10 | 690 | 1,392 | Aug 2018 |
| 43 | eduzones.com | 5.32/10 | 4 | 4 | Jan 2019 |
| 44 | artbabridgereport.org | 5.31/10 | 250 | 202 | Apr 2020 |
| 45 | dukekunshan.edu.cn | 5.30/10 | 4,400 | 142 | Mar 2024 |
| 46 | ocsinventory-ng.org | 5.30/10 | 52 | 53 | Jul 2019 |
| 47 | goodlord.co | 5.29/10 | 61 | 246 | Feb 2025 |
| 48 | instant.co | 5.12/10 | 16,600 | 1,184 | Jan 2019 |
| 49 | bstu.by | 5.05/10 | 350 | 10 | Jul 2020 |
| 50 | freightexchange.com.au | 5.01/10 | 1 | 18 | Oct 2021 |
| 51 | prototyp-hamburg.de | 4.75/10 | - | - | Mar 2019 |
| 52 | usaf.ac.za | 4.74/10 | - | - | Feb 2017 |
| 53 | merchantlaw.com | 4.73/10 | - | - | Jun 2020 |
| 54 | apprenticeshipcareers.com.au | 4.73/10 | 68 | 69 | Sep 2019 |
| 55 | neubad.org | 4.72/10 | - | - | Apr 2025 |
| 56 | hansonwade.com | 4.71/10 | - | - | Oct 2023 |
| 57 | nicepigeon.com | 4.71/10 | - | - | Feb 2020 |
| 58 | market-prospects.com | 4.69/10 | - | - | Sep 2020 |
| 59 | cme-pro.com | 4.69/10 | - | - | Oct 2024 |
| 60 | vbmuseum.org | 4.69/10 | - | - | Jan 2019 |
| 61 | kmu-berater.de | 4.69/10 | - | - | May 2020 |
| 62 | zabedu.ru | 4.69/10 | - | - | Dec 2020 |
| 63 | cuti.org.uy | 4.69/10 | - | - | May 2021 |
| 64 | themwl.org | 4.69/10 | - | - | Nov 2023 |
| 65 | ekhuft.nhs.uk | 4.69/10 | - | - | Jul 2019 |
| 66 | ricacorp.com | 4.69/10 | - | - | Oct 2022 |
| 67 | street-directory.com.au | 4.69/10 | - | - | Jan 2019 |
| 68 | musictherapy.ca | 4.69/10 | - | - | Feb 2019 |
| 69 | chantwest.com.au | 4.50/10 | - | - | Jan 2019 |
| 70 | matthewsfriends.org | 4.38/10 | - | - | Jan 2019 |
| 71 | ca-media.jp | 4.34/10 | - | - | Jun 2019 |
| 72 | tandem.co | 4.14/10 | - | - | Jun 2016 |
| 73 | globaldjmix.com | 4.03/10 | - | - | Sep 2016 |
| 74 | freetsa.org | 3.99/10 | - | - | Sep 2022 |
| 75 | paleosnadno.cz | 3.98/10 | - | - | Jan 2025 |
| 76 | cacm.org | 3.97/10 | - | - | Jun 2019 |
| 77 | montanasegura.com | 3.97/10 | - | - | Jul 2019 |
| 78 | europanels.org | 3.96/10 | - | - | Jan 2021 |
| 79 | arran.ru | 3.94/10 | - | - | Jun 2023 |
| 80 | parken.de | 3.93/10 | - | - | Sep 2023 |
| 81 | fireisland.com | 3.91/10 | - | - | May 2020 |
| 82 | desitin.de | 3.89/10 | - | - | Jan 2020 |
| 83 | sterksteschakel.nl | 3.87/10 | - | - | Jun 2021 |
| 84 | escacs.cat | 3.86/10 | - | - | Aug 2018 |
| 85 | shiatsusociety.org | 3.84/10 | - | - | Aug 2025 |
| 86 | sofworld.org | 3.84/10 | - | - | Jul 2023 |
| 87 | saveurs-de-normandie.fr | 3.69/10 | - | - | Jan 2019 |
| 88 | mypaketshop.com | 3.63/10 | - | - | Jan 2020 |
| 89 | ex-fs.net | 3.62/10 | - | - | Aug 2017 |
| 90 | steppestravel.com | 3.55/10 | - | - | Jan 2019 |
| 91 | calculadorafreelance.com | 3.54/10 | - | - | Jan 2019 |
| 92 | f-security.jp | 3.52/10 | - | - | May 2017 |
| 93 | jonasfitness.com | 3.47/10 | - | - | Aug 2026 |
| 94 | donboscovolunteers.de | 3.45/10 | - | - | Oct 2020 |
| 95 | pa.sm | 3.44/10 | - | - | Aug 2022 |
| 96 | henneo.com | 3.44/10 | - | - | May 2025 |
| 97 | revuegenesis.fr | 3.44/10 | - | - | Jan 2019 |
| 98 | receptneked.hu | 3.42/10 | - | - | May 2017 |
| 99 | scwbec.org | 3.38/10 | - | - | Sep 2022 |
| 100 | epla.no | 3.37/10 | - | - | Sep 2017 |
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) →
Columns: domain, Open Page Rank, first seen, last seen, industry (from the site's own structured data, blank when none).
Compare Flat UI
- Flat UI vs Bootstrap
- Flat UI vs Animate.css
- Flat UI vs Tailwind CSS
- Flat UI vs ZURB Foundation
- Flat UI vs Radix UI