Websites Powered by Flask
4,491 websites tracked using Flask (Web frameworks) · github.com
Flask is a web application framework used to build the site's backend. Its official site is github.com. PoweredBy tracks the websites that use Flask 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
500
1K
1.5K
Apr 2018
Jun 2020
Jul 2022
Sep 2024
Oct 2026
Domains observed using Flask in each month's HTTP Archive crawl,
Apr 2018 to Oct 2026 · peak 1,298 in Dec 2025. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.8 s
INP 75 ms
CLS 0
TTFB 700 ms
Median site among 1,877 Flask sites with Chrome UX data, p75 values, Sep 2026.
Top countries
France
301
Spain
278
United States
275
India
251
Germany
206
Mexico
178
Indonesia
176
Brazil
168
Sites using Flask by audience country, Chrome UX Report.
Usage by industry
| Industry | Share | Websites |
|---|---|---|
| Education | 0.02% | 13 |
| Industrial and manufacturing | 0.02% | 1 |
| Non-profit and religious | 0.02% | 2 |
| Government | 0.01% | 1 |
| Professional services | <0.01% | 5 |
| Software and apps | <0.01% | 14 |
| Healthcare | <0.01% | 9 |
| Arts and entertainment | <0.01% | 3 |
| Automotive | <0.01% | 4 |
| News and media | <0.01% | 2 |
| Blogs and publishing | <0.01% | 1 |
| Home and construction | <0.01% | 2 |
Share of each industry's websites with a detected stack that use Flask; industries come from what sites declare in their own structured data.
Top sites by authority
9+
<1% · 3 of 372 sites
8+
<1% · 14 of 7,677 sites
7+
<1% · 39 of 45,712 sites
6+
<1% · 56 of 110,136 sites
5+
<1% · 71 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running Flask in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using Flask
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1 | amazonaws.com | 9.50/10 | - | - | Oct 2023 |
| 2 | harvard.edu | 9.24/10 | 472,700 | 11,444 | Apr 2023 |
| 3 | openai.com | 9.10/10 | 1,962,300 | 167,582 | Sep 2023 |
| 4 | azurewebsites.net | 8.87/10 | - | - | Nov 2022 |
| 5 | us.com | 8.86/10 | 32 | 8 | Nov 2025 |
| 6 | nrw.de | 8.83/10 | - | - | Mar 2025 |
| 7 | hku.hk | 8.70/10 | 6,000 | 1,100 | Feb 2024 |
| 8 | uni-hamburg.de | 8.53/10 | 5,500 | 3,110 | Feb 2023 |
| 9 | ku.dk | 8.50/10 | 5,000 | 2,453 | Feb 2023 |
| 10 | data.gov.uk | 8.24/10 | 3,400 | 4,254 | Dec 2025 |
| 11 | kobe.lg.jp | 8.19/10 | - | - | May 2023 |
| 12 | msf.org | 8.17/10 | 24,900 | 11,580 | Oct 2026 |
| 13 | gov.mt | 8.13/10 | 3,400 | 1,456 | Jun 2024 |
| 14 | ui.ac.id | 8.04/10 | 190 | 21 | Oct 2026 |
| 15 | eleconomista.com.mx | 7.99/10 | 8,900 | 23,378 | Feb 2026 |
| 16 | appdomain.cloud | 7.96/10 | - | - | Feb 2022 |
| 17 | cdmx.gob.mx | 7.96/10 | 1,900 | 1,510 | Jul 2024 |
| 18 | iitkgp.ac.in | 7.90/10 | 580 | 618 | Jul 2025 |
| 19 | ucr.ac.cr | 7.90/10 | 3,300 | 1,872 | May 2020 |
| 20 | duckdns.org | 7.86/10 | 150 | 511 | Nov 2024 |
| 21 | danone.com | 7.84/10 | 7,500 | 3,774 | Aug 2026 |
| 22 | iisc.ac.in | 7.72/10 | 3,800 | 6,692 | Dec 2022 |
| 23 | inss.gov.br | 7.57/10 | - | 1 | Nov 2022 |
| 24 | graz.at | 7.45/10 | 150 | 273 | Nov 2021 |
| 25 | jakarta.go.id | 7.44/10 | 240 | 52 | Dec 2020 |
| 26 | ligue-cancer.net | 7.42/10 | 49 | 312 | Oct 2025 |
| 27 | hf.space | 7.34/10 | - | - | Mar 2026 |
| 28 | jalisco.gob.mx | 7.34/10 | 2,100 | 1,541 | Aug 2022 |
| 29 | unamur.be | 7.32/10 | 1,600 | 273 | Oct 2022 |
| 30 | tecnm.mx | 7.31/10 | 200 | 443 | Oct 2021 |
| 31 | aerospace.org | 7.29/10 | 36,700 | 7,093 | Mar 2023 |
| 32 | isprambiente.it | 7.12/10 | - | - | Aug 2025 |
| 33 | uin-malang.ac.id | 7.11/10 | 76 | 142 | Apr 2026 |
| 34 | ngrok.io | 7.06/10 | - | - | Feb 2026 |
| 35 | zapto.org | 7.06/10 | 21 | 1 | Oct 2026 |
| 36 | ldh-france.org | 7.04/10 | 390 | 471 | Feb 2026 |
| 37 | city.utsunomiya.tochigi.jp | 7.03/10 | - | - | Mar 2023 |
| 38 | ngrok-free.app | 7.02/10 | - | - | Jun 2024 |
| 39 | circl.lu | 7.02/10 | 160 | 145 | Dec 2022 |
| 40 | geosphere.at | 6.95/10 | 510 | 615 | Aug 2023 |
| 41 | arynews.tv | 6.95/10 | 11,900 | 17,207 | Apr 2025 |
| 42 | hacienda.gob.mx | 6.93/10 | 3 | 61 | Oct 2022 |
| 43 | montevideo.com.uy | 6.91/10 | 5,200 | 12,520 | Aug 2022 |
| 44 | udsm.ac.tz | 6.78/10 | 1,200 | 693 | Aug 2023 |
| 45 | bandung.go.id | 6.66/10 | 200 | 37 | Sep 2025 |
| 46 | uptc.edu.co | 6.60/10 | 260 | 728 | Nov 2024 |
| 47 | myqnapcloud.com | 6.50/10 | 3,200 | 674 | Mar 2026 |
| 48 | hobbii.dk | 6.44/10 | 22 | 134 | Feb 2023 |
| 49 | e-school.net.ua | 6.44/10 | - | - | Aug 2025 |
| 50 | dgav.pt | 6.43/10 | 41 | 217 | Aug 2020 |
| 51 | depa.or.th | 6.20/10 | 170 | 59 | Jul 2026 |
| 52 | kape.gov.pl | 6.14/10 | 4 | 1 | Feb 2020 |
| 53 | nhso.go.th | 6.09/10 | - | 14 | May 2025 |
| 54 | digital.gob.cl | 6.08/10 | 50 | 131 | Dec 2025 |
| 55 | thearmstradetreaty.org | 6.04/10 | 930 | 122 | Jun 2026 |
| 56 | wasmer.app | 6.03/10 | - | - | Oct 2026 |
| 57 | katholiekonderwijs.vlaanderen | 5.83/10 | - | 6 | May 2023 |
| 58 | caribbean-airlines.com | 5.78/10 | 62,700 | 5,026 | May 2026 |
| 59 | vtu.ac.in | 5.61/10 | 3,000 | 2,136 | Oct 2026 |
| 60 | fundesplai.org | 5.57/10 | - | 5 | Mar 2026 |
| 61 | fdf.dk | 5.46/10 | 1 | 9 | Dec 2022 |
| 62 | transjakarta.co.id | 5.41/10 | 240 | 86 | May 2023 |
| 63 | essalud.gob.pe | 5.37/10 | 750 | 1,957 | Aug 2025 |
| 64 | dnsalias.net | 5.35/10 | - | - | Jan 2025 |
| 65 | brlps.in | 5.35/10 | 580 | 1,227 | May 2021 |
| 66 | fortiddns.com | 5.33/10 | - | - | Feb 2026 |
| 67 | ts.net | 5.30/10 | - | - | Oct 2025 |
| 68 | designcafe.com | 5.28/10 | 5,200 | 13,193 | Nov 2025 |
| 69 | hcmute.edu.vn | 5.15/10 | 2 | 16 | Feb 2026 |
| 70 | ngrok-free.dev | 5.10/10 | - | - | Apr 2026 |
| 71 | conred.gob.gt | 5.08/10 | 440 | 1,192 | Apr 2026 |
| 72 | synlab.de | 4.98/10 | - | - | Jul 2023 |
| 73 | epson.biz | 4.95/10 | - | - | Oct 2025 |
| 74 | henallux.be | 4.89/10 | - | - | Oct 2022 |
| 75 | serra.es.gov.br | 4.84/10 | - | - | Jul 2026 |
| 76 | fenalco.com.co | 4.83/10 | - | - | Sep 2020 |
| 77 | rtaf.mi.th | 4.83/10 | - | - | Jan 2021 |
| 78 | enhedslisten.dk | 4.82/10 | - | - | Apr 2026 |
| 79 | och.fr | 4.78/10 | - | - | Jan 2026 |
| 80 | airborne-museum.org | 4.76/10 | 4,900 | 700 | Mar 2025 |
| 81 | puc.bz | 4.75/10 | - | - | Jun 2023 |
| 82 | girondenumerique.fr | 4.75/10 | - | - | Aug 2026 |
| 83 | lagemme.org | 4.73/10 | - | - | Mar 2023 |
| 84 | amos-business-school.eu | 4.72/10 | 1,400 | 201 | Oct 2026 |
| 85 | kronberg.ch | 4.72/10 | - | - | Oct 2026 |
| 86 | sofidel.com | 4.71/10 | - | - | Oct 2025 |
| 87 | emiprotechnologies.com | 4.70/10 | - | - | Jan 2016 |
| 88 | valleedelabruche.fr | 4.70/10 | - | - | Oct 2022 |
| 89 | vsparticle.com | 4.69/10 | - | - | Nov 2025 |
| 90 | mv.com | 4.69/10 | - | - | Oct 2026 |
| 91 | myheart.org.sg | 4.69/10 | - | - | Feb 2024 |
| 92 | universite-du-nous.org | 4.69/10 | - | - | Mar 2021 |
| 93 | itc.edu.kh | 4.68/10 | - | - | Sep 2022 |
| 94 | spejdernet.dk | 4.67/10 | - | - | Oct 2021 |
| 95 | fundacionsol.cl | 4.54/10 | - | - | Oct 2020 |
| 96 | sibsau.ru | 4.51/10 | - | - | Aug 2018 |
| 97 | uredjenazemlja.hr | 4.50/10 | - | - | Dec 2023 |
| 98 | medassistance.fr | 4.50/10 | - | - | Apr 2026 |
| 99 | tefhealth.eu | 4.46/10 | - | - | Jul 2026 |
| 100 | wbe.be | 4.36/10 | - | - | May 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) →
Columns: domain, Open Page Rank, first seen, last seen, industry (from the site's own structured data, blank when none).
Compare Flask
- Flask vs Microsoft ASP.NET
- Flask vs Laravel
- Flask vs Ruby on Rails
- Flask vs Express
- Flask vs CodeIgniter