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Top .io Websites & Domains

There are 531,027 active websites across 1,226,183 registered .io domains (43.3% active). Here are some of the most popular .io sites, the technologies they run, and the companies behind them.

Total Domains Found
1.23M
Technologies detected
20,768
Active websites
531K (43.3%)

Most popular .io websites

by popularity
Local rank Website Global rank StackSpend Technologies detected
1 sentry.io 98 $1.28M+
Microsoft 365 Box Enterprise Vercel Dropbox Business Plausible Analytics
2 0xrpc.io 145 $13.18K+
MEVSPACE Njalla DNS
3 adobe.io 173 $2.76K+
Google Search Console GlobalSign Amazon Web Services Agari
4 merkle.io 360 $46.38K+
Plausible Analytics Next Js Cloudflare Google Workspace React
5 pangle.io 421 $45+
Akamai Technologies DNS
6 branch.io 437 $1.35M+
Adobe IDP Zapier Amazon Route 53 DNS Notion Site Uber for Business
7 oxylabs.io 481 $887K+
Cloudflare Insight Statuspage NordPass React OnDMARC
8 intercom.io 585 $2.42M+
Sanity Amazon Web Services TailScale Vercel Next Js
9 grammarly.io 607 $2.76K+
dmarcian Google Workspace Amazon Web Services Anthropic
10 xhmikosr.io 633 $6.33K+
Fastly GitHub Pages Cloudflare Google Search Console
11 ipinfo.io 640 $31.64K+
Adobe Fonts Next Js Mailgun HubSpot Zendesk
12 pendo.io 654 $2.51M+
Atlassian Drift HubSpot Apple Business Manager Miro
13 1rx.io 659 $45+
Outlook for business IBM NS1 Connect Sectigo Microsoft 365
14 bidr.io 686 $2.76K+
Google Search Console Amazon Web Services
15 liftoff.io 701 $166K+
Apple Business Connect Salesforce 1Password Business Jamf Google Search Console
16 yellowblue.io 801 $2.76K+
Amazon Route 53 DNS Google Search Console
17 nic.io 836 $5.51K+
AWS Global Accelerator Google Workspace Sectigo OnDMARC
18 docker.io 864 $41.4K+
Fastly MariaDB Detectify Amazon ComodoCA SSL
19 readthedocs.io 947 $5.18K+
SSL.com DigiCert Amazon Web Services Google Trust Services Read the Docs Addons
20 kniebes.io 951 $5.17K+
Google Search Console All-Inkl Kasserver Email
21 split.io 976 $248K+
Airtable Amazon Web Services Miro WebFontLoader Webflow
22 agora.io 978 $177K+
Google Search Console Trust Provider SSL Outlook for business Microsoft 365 jsDelivr
23 4dex.io 993 $2.45K+
Google Search Console Cloudflare DNS
24 bidmachine.io 1,001 $32.51K+
Webflow Amazon SES Cloudflare DNS HubSpot Zoom
25 liftoff-creatives.io 1,007 $1.93K+
Amazon Route 53 DNS
26 wpguardian.io 1,027 $11K+
WordPress Litespeed Cloudflare DNS HubSpot
27 tubi.io 1,038 $1.93K+
Amazon Route 53 DNS GlobalSign
28 segment.io 1,074 $17.63K+
Statuspage Adobe Amazon Web Services TrustArc Valimail
29 cardgames.io 1,310 $4.41K+
Amazon Trust Services Amazon S3 Google Trust Services Google Workspace Translate Js
30 statuspage.io 1,385 $3.69K+
Amazon Trust Services Proofpoint DMARC Salesforce Marketing Cloud Meta Business Suite Amazon Route 53 DNS
31 ssstik.io 1,406 $4.26K+
Google Search Console Cloudflare
32 byteconnect.io 1,453 $4.19K+
Google Search Console React Cloudflare Next Js
33 privacymanager.io 1,983 $1.93K+
Amazon
34 getgrass.io 2,083 $503K+
Cloudflare Trustpilot Google Search Console
35 metamask.io 2,165 $26.41K+
Osano Google Search Console React Miro DMARC Digests
36 presage.io 2,189 $1.18K+
Mandrill DocuSign Gandi Google Workspace Mailchimp
37 itch.io 2,205 $4.54K+
Postmark DMARC ZOHO React Cloudflare MightyGrep
38 litix.io 2,214 $1.93K+
Envoy Amazon Web Services ZeroSSL
39 gos-gsp.io 2,259 $1.93K+
Amazon Route 53 DNS
40 mediago.io 2,271 $3.36K+
Amazon Google Search Console Nuxt.js Rem Amazon Trust Services
41 shodan.io 2,315 $3.33K+
Anthropic Microsoft 365 Envoy Google Workspace Cloudflare
42 adobestats.io 2,337 $1.93K+
Agari Amazon Route 53 DNS
43 customer.io 2,390 $460K+
Google Workspace Meta Business Suite Sentry Anthropic Mailchimp
44 akstat.io 2,415 $45+
Proofpoint Akamai Technologies DNS
45 home-assistant.io 2,451 $22.78K+
Zendesk Google Search Console Meta Business Suite Cloudflare Prism
46 onetrust.io 2,467 $1.91K+
Cloudflare DNS
47 ogury.io 2,530 $8.36K+
Google Analytics Mandrill Gandi DNS WPPlugins/sitepress-multilingual-cms Mailchimp
48 connectad.io 2,538 $26.6K+
Salient Child Cloudflare DMARC Flickity Microsoft 365 Anthropic
49 aditude.io 2,540 $17.78K+
Apple Business Manager Framer Amazon Web Services Google Search Console Anthropic
50 huntress.io 2,572 $187K+
Monday.com Ruby on Rails Google Analytics Atlassian Amazon Route 53 DNS

This is 50 of 1,226,183 websites in .io. Filter the full index by stack, keyword and location, then export it as CSV.

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Language usage on .io websites

by websites
  1. 01 English 376,039 90.5%
  2. 02 French 7,607 1.8%
  3. 03 German 7,493 1.8%
  4. 04 Spanish 6,047 1.5%
  5. 05 Vietnamese 4,129 1%
  6. 06 Portuguese 3,395 0.8%
  7. 07 Russian 2,175 0.5%
  8. 08 Chinese 2,143 0.5%
  9. 09 Other 6,296 1.5%

Top 25 companies using a .io domain (out of 159,872)

by verified headcount
Company Website Founded Employees City/Location
Americanas S.a. carreiras.americanas.io 1929 10,001+ Rio de Janeiro
Meesho meesho.io 2015 10,001+ Bangalore
Own A Small Business tronbaba.io 2018 5,001-10,000 Nottingham
Coca-Cola Andina Brasil koandina.gupy.io 1946 5,001-10,000 Rio de Janeiro
Varias varias.io 2019 5,001-10,000 Rotterdam
PDS Health spklr.io 1994 5,001-10,000 Henderson
Casa & Video casaevideo.gupy.io 2009 5,001-10,000 Rio de Janeiro
Barbershop barbershop.io 2015 1,001-5,000 Denver
Astronomer astronomer.io 2018 1,001-5,000 New York
Sem Parar semparar.gupy.io - 1,001-5,000 São Paulo
UNKNOWN weareunknown.io 2018 1,001-5,000 London
Caedu caedu.gupy.io 1975 1,001-5,000 São Paulo
Umowa umowa.io - 1,001-5,000 Bialystok
Confidencial.io confidencial.io 2021 1,001-5,000 Menlo Park
Grupo Ri Happy gruporihappy.gupy.io 1988 1,001-5,000 São Paulo
Actionline actionline.io 1999 1,001-5,000 São Paulo
Promod promodjob.talentview.io 1975 1,001-5,000 Marcq-en-Baroeul
CAI cai.io 1981 1,001-5,000 Allentown
Manager manager.io 2011 1,001-5,000 Sydney
Dialectica dialectica.io 2015 1,001-5,000 London
Gong gong.io 2015 1,001-5,000 San Francisco
1% Club onepercentclub.io 2022 1,001-5,000 Mumbai
Easygo easygo.io 2016 1,001-5,000 Melbourne
JUSPAY juspay.io 2012 1,001-5,000 Global
ASEE asee.io 2007 1,001-5,000 Warsaw

Companies using .io domains by industry

top 12
  1. 01 computer software 29,709 26.4%
  2. 02 information technology and services 25,272 22.4%
  3. 03 Technology, Information and Internet 15,767 14%
  4. 04 marketing and advertising 11,725 10.4%
  5. 05 Financial Services 7,278 6.5%
  6. 06 management consulting 6,511 5.8%
  7. 07 internet 4,430 3.9%
  8. 08 computer & network security 2,576 2.3%
  9. 09 Design 2,488 2.2%
  10. 10 Computer Games 2,438 2.2%
  11. 11 Technology, Information and Media 2,255 2%
  12. 12 Blockchain Services 2,202 2%

Companies using .io by employee count

99.4K companies

Most used technologies on .io websites

by websites
# Technology Category Websites Share of the leader
01 Cloudflare Hosting & Infrastructure 354,268
02 Amazon Web Services (AWS) Hosting & Infrastructure 231,178
03 Google Search Console Marketing & SEO 181,822
04 GoDaddy Hosting & Infrastructure 159,777
05 Namecheap DNS DNS Services 90,734
06 React Marketing & SEO 71,805
07 WordPress Content Management 56,885
08 Next Js Software Development 54,002
09 Afternic DNS DNS Services 52,447
10 Vercel Hosting & Infrastructure 50,732
11 GoDaddy DMARC MX & Email Hosting Services 46,932
12 Microsoft 365 Business Operations 44,837
13 Sectigo Security & Compliance 42,633
14 Google Domains DNS DNS Services 41,113
15 Outlook for business MX & Email Hosting Services 40,935

Technology usage on .io websites by category

share of detections

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