Websites Powered by Sapper
1,028 websites tracked using Sapper (Web frameworks) · sapper.svelte.dev
Sapper is a web application framework used to build the site's backend. Its official site is sapper.svelte.dev. PoweredBy tracks the websites that use Sapper 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
200
400
600
Oct 2019
Jul 2021
Apr 2023
Dec 2024
Sep 2026
Domains observed using Sapper in each month's HTTP Archive crawl,
Oct 2019 to Sep 2026 · peak 527 in Aug 2022. 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 361 Sapper sites with Chrome UX data, p75 values, Sep 2026.
Top countries
United States
197
Germany
99
United Kingdom
95
Canada
94
India
90
France
79
Netherlands
74
Spain
70
Sites using Sapper by audience country, Chrome UX Report.
Usage by industry
| Industry | Share | Websites |
|---|---|---|
| Education | 0.12% | 62 |
| Finance and insurance | <0.01% | 1 |
| Travel and hospitality | <0.01% | 1 |
| Healthcare | <0.01% | 1 |
| Restaurants and food | <0.01% | 1 |
| Retail | <0.01% | 1 |
Share of each industry's websites with a detected stack that use Sapper; industries come from what sites declare in their own structured data.
Top sites by authority
9+
<1% · 2 of 372 sites
8+
<1% · 3 of 7,677 sites
7+
<1% · 8 of 45,712 sites
6+
<1% · 15 of 110,136 sites
5+
<1% · 18 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running Sapper in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using Sapper
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1 | vercel.app | 9.05/10 | - | - | May 2021 |
| 2 | netlify.app | 9.01/10 | 2 | 2 | Jul 2020 |
| 3 | data.gov.uk | 8.24/10 | 3,400 | 4,254 | Jul 2026 |
| 4 | txstate.edu | 7.89/10 | - | - | May 2024 |
| 5 | 1c.ru | 7.67/10 | 53 | 16 | Nov 2021 |
| 6 | nativescript.org | 7.66/10 | 270 | 205 | Apr 2025 |
| 7 | withyoutube.com | 7.46/10 | - | - | Feb 2020 |
| 8 | phemex.com | 7.00/10 | 7,500 | 10,759 | Feb 2020 |
| 9 | denikreferendum.cz | 6.83/10 | 960 | 90 | Mar 2020 |
| 10 | mohp.gov.np | 6.74/10 | 210 | 97 | Aug 2022 |
| 11 | siegessaeule.de | 6.58/10 | 1,500 | 235 | Mar 2020 |
| 12 | sensor.community | 6.50/10 | 10 | 15 | Mar 2020 |
| 13 | pinafore.social | 6.28/10 | 440 | 2 | Nov 2019 |
| 14 | historia.ro | 6.03/10 | 440 | 509 | May 2022 |
| 15 | click.ro | 6.02/10 | 450 | 1,262 | Jan 2022 |
| 16 | dilemaveche.ro | 5.49/10 | 1 | 39 | May 2022 |
| 17 | phin.org.uk | 5.28/10 | 610 | 833 | Aug 2021 |
| 18 | unesco-welterbetag.de | 5.28/10 | 45 | 30 | Aug 2022 |
| 19 | mugshots.com | 4.75/10 | - | - | Jan 2020 |
| 20 | nibr.com | 4.69/10 | - | - | Aug 2022 |
| 21 | musicforprogramming.net | 4.69/10 | - | - | Jan 2022 |
| 22 | littlewandle.org.uk | 4.64/10 | - | - | Jul 2025 |
| 23 | crimean-solidarity.org | 4.61/10 | - | - | Sep 2020 |
| 24 | cro-co.co.jp | 4.48/10 | - | - | Dec 2021 |
| 25 | plij.or.jp | 4.41/10 | - | - | Sep 2022 |
| 26 | doa.gov.my | 4.28/10 | - | - | Aug 2022 |
| 27 | johnells.se | 4.25/10 | - | - | Nov 2020 |
| 28 | osm.be | 4.24/10 | - | - | Apr 2026 |
| 29 | adsb.lol | 4.11/10 | 3,100 | 98 | Aug 2026 |
| 30 | patrimoinevivant.qc.ca | 4.08/10 | - | - | Jun 2022 |
| 31 | elastic.run | 3.97/10 | - | - | Sep 2024 |
| 32 | clicksanatate.ro | 3.96/10 | - | - | Jul 2022 |
| 33 | beehively.com | 3.82/10 | 99 | 48 | Jan 2023 |
| 34 | spiltan.se | 3.73/10 | - | - | Nov 2021 |
| 35 | clickpentrufemei.ro | 3.66/10 | - | - | Apr 2022 |
| 36 | dwtkns.com | 3.58/10 | - | - | Jan 2021 |
| 37 | avris.it | 3.54/10 | - | - | Sep 2021 |
| 38 | ernesti.fr | 3.54/10 | - | - | Dec 2020 |
| 39 | vbtmakelaars.nl | 3.47/10 | - | - | Mar 2021 |
| 40 | hug-foodservice.ch | 3.39/10 | - | - | Aug 2022 |
| 41 | vbtverhuurmakelaars.nl | 3.36/10 | - | - | Aug 2021 |
| 42 | filestar.com | 3.33/10 | - | - | Apr 2020 |
| 43 | tagplus.com.br | 3.29/10 | - | - | Sep 2022 |
| 44 | massshootingtracker.site | 3.27/10 | - | - | May 2021 |
| 45 | kooba.ie | 3.25/10 | - | - | Jul 2022 |
| 46 | cubari.moe | 3.23/10 | - | - | Nov 2024 |
| 47 | dehuizenbemiddelaar.nl | 3.22/10 | - | - | May 2020 |
| 48 | beige.de | 3.17/10 | 1 | 10 | Dec 2019 |
| 49 | kidzania.ru | 3.00/10 | - | - | May 2021 |
| 50 | alter.vc | 2.97/10 | 62 | 36 | Jun 2021 |
| 51 | campeagle.org | 2.93/10 | - | - | May 2021 |
| 52 | elfhosted.com | 2.91/10 | - | - | Apr 2024 |
| 53 | glorieta.org | 2.87/10 | - | - | Jun 2021 |
| 54 | opensourcepos.org | 2.75/10 | - | - | Dec 2023 |
| 55 | dfih.fr | 2.75/10 | - | - | Mar 2021 |
| 56 | videofizz.com | 2.70/10 | - | - | Jul 2021 |
| 57 | jajawein.de | 2.68/10 | - | - | Sep 2021 |
| 58 | tywlsbronx.org | 2.63/10 | - | - | Aug 2022 |
| 59 | pacificcoastacademy.org | 2.62/10 | - | - | Jul 2021 |
| 60 | crhss.org | 2.62/10 | - | - | Oct 2022 |
| 61 | thenewvillageschool.org | 2.60/10 | - | - | Nov 2022 |
| 62 | novosst.com | 2.54/10 | - | - | Jun 2021 |
| 63 | xn--90abb0cal0gub.xn--p1ai | 2.53/10 | - | - | Jan 2021 |
| 64 | delirescalade.com | 2.52/10 | - | - | Nov 2020 |
| 65 | russiancast.club | 2.44/10 | - | - | Sep 2020 |
| 66 | spsv.org | 2.44/10 | - | - | Aug 2023 |
| 67 | kunstavgiften.no | 2.41/10 | - | - | Dec 2022 |
| 68 | sspeterpaulsf.org | 2.36/10 | - | - | Nov 2022 |
| 69 | datalabor.pt | 2.33/10 | - | - | Jan 2021 |
| 70 | coeurpoumons.ca | 2.28/10 | - | - | Jun 2020 |
| 71 | excelacademy.education | 2.25/10 | - | - | Mar 2022 |
| 72 | integration.org | 2.23/10 | - | - | Aug 2022 |
| 73 | saylesschool.org | 2.16/10 | - | - | Aug 2022 |
| 74 | cabrillopointacademy.org | 2.12/10 | - | - | Aug 2024 |
| 75 | wascouhsd.org | 2.09/10 | - | - | Jul 2025 |
| 76 | aurorawaldorfschool.org | 2.05/10 | 37 | 40 | May 2021 |
| 77 | liljeholmen.nu | 2.04/10 | - | - | Apr 2021 |
| 78 | echtzeit-sachsen-anhalt.de | 2.00/10 | - | - | Jan 2023 |
| 79 | exnova.com | 1.99/10 | - | - | Feb 2023 |
| 80 | saltmag.ru | 1.95/10 | - | - | Nov 2019 |
| 81 | mcavicenna.ru | 1.91/10 | - | - | Aug 2022 |
| 82 | apoge.org | 1.89/10 | - | - | Dec 2023 |
| 83 | eastbayia.org | 1.88/10 | - | - | Nov 2022 |
| 84 | saintgregorychurch.org | 1.83/10 | - | - | Sep 2022 |
| 85 | exnova.org | 1.83/10 | - | - | Sep 2022 |
| 86 | isleward.com | 1.83/10 | - | - | Jul 2023 |
| 87 | osteo7-7.ch | 1.80/10 | - | - | Oct 2019 |
| 88 | rpacademy.org | 1.78/10 | - | - | Sep 2026 |
| 89 | cpcvnormandie.fr | 1.77/10 | - | - | Sep 2021 |
| 90 | pacificcollegiate.com | 1.73/10 | - | - | Aug 2023 |
| 91 | goldenvcs.org | 1.70/10 | - | - | Aug 2024 |
| 92 | shalomschool.org | 1.69/10 | - | - | Jan 2025 |
| 93 | missionvistaacademy.org | 1.68/10 | - | - | Sep 2024 |
| 94 | plinkysynth.com | 1.68/10 | - | - | Mar 2021 |
| 95 | redclinic.ru | 1.67/10 | - | - | Jan 2025 |
| 96 | wlcs.org | 1.60/10 | - | - | Nov 2022 |
| 97 | dobreduel.com | 1.56/10 | - | - | Mar 2022 |
| 98 | yuumari.com | 1.56/10 | - | - | Sep 2020 |
| 99 | bestofbrands.com | 1.56/10 | 10 | 50 | Nov 2023 |
| 100 | biglaw.org | 1.56/10 | 1,400 | 695 | Mar 2020 |
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).
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