Websites Powered by FullCalendar
137,672 websites tracked using FullCalendar (Widgets) · fullcalendar.io
FullCalendar is a embeddable widget that adds a feature to web pages. Its official site is fullcalendar.io. PoweredBy tracks the websites that use FullCalendar across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the widgets ecosystem.
Usage trend
20K
40K
60K
80K
Dec 2022
Nov 2023
Sep 2024
Aug 2025
Jun 2026
Domains observed using FullCalendar in each month's HTTP Archive crawl,
Dec 2022 to Jun 2026 · peak 73,406 in Oct 2024. 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 73,076 FullCalendar sites with Chrome UX data, p75 values, Jun 2026.
Top countries
United States
27,661
Germany
7,311
France
7,103
United Kingdom
6,903
India
6,610
Spain
5,712
Canada
5,580
Italy
5,383
Sites using FullCalendar by audience country, Chrome UX Report.
Top sites by authority
9+
9% · 32 of 372 sites
8+
7% · 507 of 7,677 sites
7+
3% · 1,437 of 45,712 sites
6+
2% · 2,348 of 110,136 sites
5+
2% · 3,755 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running FullCalendar in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using FullCalendar
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1 | europa.eu | 9.57/10 | 42,200 | 31,835 | Dec 2022 |
| 2 | github.io | 9.43/10 | 1,800 | 1 | Mar 2023 |
| 3 | blogspot.com | 9.39/10 | - | - | Dec 2022 |
| 4 | zoom.us | 9.29/10 | 682,200 | 64,680 | Dec 2022 |
| 5 | harvard.edu | 9.24/10 | 472,900 | 13,570 | Dec 2022 |
| 6 | ca.gov | 9.23/10 | 1,457,100 | 28,722 | Dec 2022 |
| 7 | stanford.edu | 9.19/10 | 3,302,700 | 5,160 | Jan 2023 |
| 8 | nasa.gov | 9.15/10 | 2,715,500 | 372,280 | Jun 2023 |
| 9 | myshopify.com | 9.12/10 | - | - | Dec 2022 |
| 10 | xing.com | 9.12/10 | 1,000 | 7,689 | Dec 2025 |
| 11 | berkeley.edu | 9.10/10 | 166,900 | 5,412 | Dec 2022 |
| 12 | cornell.edu | 9.10/10 | 242,100 | 23,854 | Dec 2022 |
| 13 | canada.ca | 9.08/10 | 2,129,800 | 995,010 | Jul 2024 |
| 14 | mhlw.go.jp | 9.08/10 | 15,300 | 12,761 | Jan 2025 |
| 15 | loc.gov | 9.06/10 | 1,940,600 | 291,331 | Dec 2022 |
| 16 | vercel.app | 9.05/10 | - | - | Dec 2022 |
| 17 | house.gov | 9.05/10 | 752,000 | 103,932 | Dec 2022 |
| 18 | free.fr | 9.05/10 | 3,400 | 1,262 | Dec 2022 |
| 19 | bizjournals.com | 9.04/10 | 814,500 | 869,896 | May 2023 |
| 20 | wpengine.com | 9.04/10 | 66,500 | 17,967 | Dec 2022 |
| 21 | mayoclinic.org | 9.04/10 | 61,726,300 | 4,533,343 | Dec 2022 |
| 22 | ny.gov | 9.04/10 | 691,300 | 55,212 | Dec 2022 |
| 23 | census.gov | 9.04/10 | 1,526,700 | 227,460 | May 2026 |
| 24 | ieee.org | 9.02/10 | 37,200 | 20,161 | Feb 2023 |
| 25 | columbia.edu | 9.02/10 | 770,900 | 41,349 | Dec 2022 |
| 26 | netlify.app | 9.01/10 | 2 | 2 | Dec 2022 |
| 27 | psu.edu | 9.01/10 | 581,600 | 94,595 | Dec 2022 |
| 28 | umich.edu | 9.01/10 | 36,500 | 1,974 | Dec 2022 |
| 29 | yale.edu | 9.01/10 | 177,900 | 6,885 | Dec 2022 |
| 30 | uk.com | 9.00/10 | 2 | 12 | Dec 2022 |
| 31 | upenn.edu | 9.00/10 | 179,200 | 5,457 | Dec 2022 |
| 32 | dol.gov | 9.00/10 | 2,744,400 | 631,787 | Oct 2024 |
| 33 | va.gov | 8.99/10 | 3,933,900 | 1,032,734 | Dec 2022 |
| 34 | azureedge.net | 8.98/10 | - | - | Dec 2022 |
| 35 | princeton.edu | 8.98/10 | 246,800 | 50,700 | Dec 2022 |
| 36 | texas.gov | 8.98/10 | 856,400 | 43,777 | Dec 2022 |
| 37 | wisc.edu | 8.97/10 | 461,400 | 7,361 | Dec 2022 |
| 38 | nsw.gov.au | 8.95/10 | 75,300 | 73,181 | Dec 2022 |
| 39 | ethz.ch | 8.95/10 | 12,900 | 11,869 | Dec 2022 |
| 40 | sakura.ne.jp | 8.95/10 | - | - | Dec 2022 |
| 41 | maine.gov | 8.93/10 | 1,116,200 | 428,738 | Jan 2024 |
| 42 | ucla.edu | 8.93/10 | 412,200 | 14,756 | Dec 2022 |
| 43 | wa.gov | 8.93/10 | 719,800 | 8,195 | Dec 2022 |
| 44 | utexas.edu | 8.92/10 | 503,000 | 11,984 | Dec 2022 |
| 45 | uchicago.edu | 8.92/10 | 63,700 | 10,331 | Dec 2022 |
| 46 | si.edu | 8.92/10 | 1,458,100 | 152,619 | Sep 2023 |
| 47 | mlit.go.jp | 8.92/10 | 11,100 | 6,476 | Oct 2025 |
| 48 | gov.ru | 8.91/10 | 2,700 | 216 | Mar 2023 |
| 49 | shop-pro.jp | 8.91/10 | 17 | 9 | Dec 2022 |
| 50 | nyu.edu | 8.90/10 | 674,000 | 142,032 | Dec 2022 |
| 51 | nyc.gov | 8.90/10 | 3,942,300 | 913,688 | Mar 2026 |
| 52 | usc.edu | 8.89/10 | 361,000 | 14,987 | Dec 2022 |
| 53 | duke.edu | 8.88/10 | 193,100 | 821 | Jan 2023 |
| 54 | azurewebsites.net | 8.87/10 | - | - | Dec 2022 |
| 55 | appspot.com | 8.87/10 | - | - | Dec 2022 |
| 56 | cam.ac.uk | 8.87/10 | 208,200 | 35,354 | Dec 2022 |
| 57 | site.com | 8.86/10 | - | 1 | Dec 2022 |
| 58 | us.com | 8.86/10 | 32 | 9 | Dec 2022 |
| 59 | intel.com | 8.86/10 | 1,129,900 | 230,322 | Dec 2022 |
| 60 | purdue.edu | 8.86/10 | 744,800 | 169,159 | Dec 2022 |
| 61 | northwestern.edu | 8.86/10 | 193,400 | 45,922 | Dec 2022 |
| 62 | umd.edu | 8.85/10 | 253,300 | 15,690 | Dec 2022 |
| 63 | ufl.edu | 8.84/10 | 241,600 | 3,624 | Dec 2022 |
| 64 | ucsd.edu | 8.84/10 | 48,100 | 2,389 | Dec 2022 |
| 65 | ubc.ca | 8.84/10 | 14,500 | 2,813 | Dec 2022 |
| 66 | redhat.com | 8.83/10 | 290,500 | 84,884 | Dec 2022 |
| 67 | illinois.edu | 8.83/10 | 47,000 | 4,065 | Dec 2022 |
| 68 | ucdavis.edu | 8.83/10 | 383,600 | 93,475 | Oct 2023 |
| 69 | unc.edu | 8.83/10 | 342,800 | 27,928 | Dec 2022 |
| 70 | tokyo.lg.jp | 8.83/10 | - | - | Jun 2023 |
| 71 | asu.edu | 8.82/10 | 144,700 | 4,208 | Dec 2022 |
| 72 | maryland.gov | 8.82/10 | 173,300 | 7,828 | Apr 2026 |
| 73 | cnrs.fr | 8.82/10 | 4,300 | 2,992 | Dec 2022 |
| 74 | virginia.gov | 8.82/10 | 339,900 | 20,933 | May 2024 |
| 75 | it.com | 8.81/10 | - | - | Jan 2026 |
| 76 | utoronto.ca | 8.81/10 | 42,800 | 10,094 | Dec 2022 |
| 77 | fc2.com | 8.80/10 | 5,100 | 10 | Dec 2022 |
| 78 | utah.gov | 8.80/10 | 129,900 | 27,432 | Dec 2022 |
| 79 | in.gov | 8.80/10 | 3,076,000 | 1,001,546 | Dec 2022 |
| 80 | hopkinsmedicine.org | 8.79/10 | 9,812,100 | 1,276,317 | Dec 2022 |
| 81 | uzh.ch | 8.79/10 | 7,800 | 3,263 | Dec 2022 |
| 82 | mn.gov | 8.78/10 | 964,200 | 281,325 | Dec 2022 |
| 83 | georgetown.edu | 8.78/10 | 138,100 | 27,817 | Dec 2022 |
| 84 | msu.edu | 8.78/10 | 149,500 | 2,641 | Dec 2022 |
| 85 | mext.go.jp | 8.78/10 | 1,300 | 1,556 | Dec 2022 |
| 86 | odoo.com | 8.77/10 | 63,000 | 27,307 | Dec 2022 |
| 87 | gouv.qc.ca | 8.77/10 | - | - | Dec 2022 |
| 88 | web.app | 8.76/10 | - | - | Dec 2022 |
| 89 | uci.edu | 8.76/10 | 94,700 | 9,859 | Dec 2022 |
| 90 | tamu.edu | 8.76/10 | 352,900 | 11,636 | Dec 2022 |
| 91 | amnesty.org | 8.75/10 | 320,300 | 77,595 | Dec 2022 |
| 92 | rutgers.edu | 8.75/10 | 147,400 | 31,478 | Dec 2022 |
| 93 | mo.gov | 8.75/10 | 136,100 | 9,975 | Feb 2024 |
| 94 | herokuapp.com | 8.74/10 | - | - | Dec 2022 |
| 95 | webex.com | 8.74/10 | 79,100 | 38,804 | Jun 2024 |
| 96 | ucl.ac.uk | 8.74/10 | 154,800 | 93,062 | Dec 2022 |
| 97 | epfl.ch | 8.74/10 | 12,900 | 6,546 | Oct 2023 |
| 98 | brown.edu | 8.73/10 | 377,100 | 26,065 | Feb 2023 |
| 99 | virginia.edu | 8.73/10 | 265,200 | 11,663 | Dec 2022 |
| 100 | illinois.gov | 8.73/10 | 523,000 | 73,209 | Dec 2022 |
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) →
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