Most Popular .io Websites
194 of the top 10,000 websites (1.9%) use the .io extension. The most common technologies among them are Cloudflare (50%), Google Tag Manager (37%) and React (28%).
| Rank | Website | 7-day | Registered |
|---|---|---|---|
| #101 | sentry.io | ▼ 5 | 2012 |
| #129 | github.io | – | 2013 |
| #144 | adobe.io | ▲ 10 | 2012 |
| #409 | h264.io | ▲ 46 | 2019 |
| #459 | branch.io | ▲ 78 | 2011 |
| #468 | pangle.io | ▼ 22 | 2019 |
| #574 | 0xrpc.io | ▲ 287 | 2025 |
| #585 | grammarly.io | ▲ 116 | 2015 |
| #647 | ipinfo.io | ▼ 99 | 2013 |
| #669 | intercom.io | ▼ 13 | 2011 |
| #700 | wpguardian.io | ▼ 3 | 2023 |
| #722 | oxylabs.io | ▲ 1 | 2015 |
| #731 | itch.io | ▲ 1 | 2011 |
| #739 | pushy.io | ▼ 54 | 2017 |
| #758 | bidr.io | – | 2014 |
| #761 | 1rx.io | ▼ 2 | 2015 |
| #808 | keenetic.io | ▼ 40 | 2017 |
| #832 | liftoff.io | ▼ 6 | 2012 |
| #876 | pendo.io | – | 2013 |
| #887 | yellowblue.io | ▼ 1 | 2020 |
| #907 | agora.io | – | 2013 |
| #913 | readthedocs.io | ▲ 7 | 2014 |
| #954 | docker.io | ▼ 7 | 2012 |
| #982 | 4dex.io | ▼ 11 | 2018 |
| #992 | presage.io | ▼ 5 | 2014 |
| #1,039 | statuspage.io | ▲ 33 | 2012 |
| #1,061 | bidmachine.io | ▼ 12 | 2018 |
| #1,071 | tubi.io | ▲ 9 | 2017 |
| #1,171 | netcraze.io | ▼ 70 | 2024 |
| #1,176 | astrumu.io | ▲ 298 | 2026 |
| #1,396 | cardgames.io | ▼ 5 | 2014 |
| #1,442 | adobestats.io | ▲ 24 | 2023 |
| #1,492 | ssstik.io | ▼ 14 | 2020 |
| #1,709 | indown.io | ▲ 3 | 2022 |
| #2,005 | litix.io | ▲ 8 | 2016 |
| #2,011 | sslip.io | ▲ 223 | 2015 |
| #2,066 | split.io | ▲ 271 | 2015 |
| #2,078 | privacymanager.io | ▲ 3 | 2019 |
| #2,145 | nic.io | ▲ 13 | 2003 |
| #2,186 | shodan.io | ▲ 16 | 2012 |
| #2,207 | metamask.io | ▼ 20 | 2015 |
| #2,208 | segment.io | ▼ 211 | 2011 |
| #2,279 | liftoff-creatives.io | ▼ 6 | 2022 |
| #2,285 | customer.io | ▲ 5 | 2011 |
| #2,339 | gos-gsp.io | ▼ 3 | 2019 |
| #2,360 | onetrust.io | ▼ 1 | 2016 |
| #2,414 | trustindex.io | ▲ 11 | 2017 |
| #2,470 | snapcraft.io | ▼ 57 | 2016 |
| #2,487 | home-assistant.io | – | 2014 |
| #2,507 | nexx360.io | ▲ 19 | 2020 |
| #2,518 | ikarem.io | ▲ 56 | 2013 |
| #2,523 | scopely.io | ▼ 22 | 2013 |
| #2,544 | ioref.io | ▼ 69 | 2024 |
| #2,609 | ogury.io | ▲ 3 | 2014 |
| #2,647 | pxf.io | ▲ 12 | 2016 |
| #2,650 | aditude.io | ▲ 7 | 2015 |
| #2,706 | redis.io | ▲ 59 | 2010 |
| #2,748 | huntress.io | ▲ 10 | 2015 |
| #2,827 | eqtv.io | ▲ 47 | 2022 |
| #2,837 | cloudx.io | ▼ 13 | 2016 |
| #2,875 | logitech.io | ▲ 13 | 2016 |
| #2,943 | mediago.io | ▼ 207 | 2019 |
| #2,952 | cometchat.io | ▲ 3 | 2019 |
| #2,954 | azurecontainerapps.io | ▲ 172 | 2021 |
| #2,963 | webflow.io | ▼ 1 | 2013 |
| #2,970 | nip.io | ▲ 54 | 2012 |
| #2,978 | omni-dex.io | ▲ 172 | 2025 |
| #3,027 | island.io | ▲ 290 | 2011 |
| #3,100 | merkle.io | ▲ 5 | 2019 |
| #3,121 | sjv.io | ▲ 14 | 2016 |
| #3,129 | found.io | ▲ 65 | 2013 |
| #3,155 | pantheonsite.io | ▲ 121 | 2016 |
| #3,170 | avs.io | ▼ 86 | 2013 |
| #3,211 | nextdns.io | ▲ 28 | 2019 |
| #3,284 | guard.io | ▼ 41 | 2014 |
| #3,303 | hotjar.io | ▼ 8 | 2019 |
| #3,343 | es.io | ▼ 9 | 2003 |
| #3,350 | mrf.io | ▲ 65 | 2014 |
| #3,448 | gitbook.io | ▼ 23 | 2014 |
| #3,460 | vimla.io | ▲ 14 | 2017 |
| #3,531 | elevenlabs.io | ▲ 149 | 2021 |
| #3,556 | ably.io | ▲ 31 | 2012 |
| #3,588 | akstat.io | ▲ 18 | 2017 |
| #3,733 | piano.io | ▲ 39 | 2013 |
| #3,830 | connectad.io | ▲ 10 | 2016 |
| #3,847 | siteimproveanalytics.io | ▲ 47 | 2017 |
| #3,873 | clarium.io | ▼ 1 | 2016 |
| #3,881 | netbird.io | ▲ 26 | 2022 |
| #3,907 | complianz.io | ▼ 15 | 2018 |
| #3,986 | vwapps.io | ▲ 321 | 2015 |
| #4,054 | codepen.io | ▼ 8 | 2012 |
| #4,057 | missena.io | ▲ 17 | 2018 |
| #4,127 | sanity.io | ▲ 76 | 2015 |
| #4,149 | kandji.io | ▲ 97 | 2018 |
| #4,206 | growthbook.io | ▲ 4 | 2020 |
| #4,214 | bitdrift.io | ▲ 24 | 2023 |
| #4,255 | jumpjump.io | ▼ 73 | 2022 |
| #4,268 | termly.io | ▼ 19 | 2016 |
| #4,294 | greenhouse.io | ▼ 106 | 2012 |
| #4,327 | gitlab.io | ▲ 31 | 2012 |
| #4,390 | rapidedge.io | ▲ 470 | 2022 |
| #4,398 | zetaglobal.io | ▼ 34 | 2018 |
| #4,418 | opensea.io | ▼ 3 | 2017 |
| #4,426 | gohugo.io | ▼ 22 | 2014 |
| #4,430 | plausible.io | ▼ 339 | 2018 |
| #4,699 | fpjs.io | ▲ 9 | 2019 |
| #4,702 | shopee.io | ▲ 36 | 2018 |
| #4,867 | kubernetes.io | ▲ 129 | 2014 |
| #4,878 | advolve.io | ▼ 528 | 2025 |
| #4,880 | viasat.io | ▼ 586 | 2013 |
| #4,941 | ghcr.io | ▼ 3 | 2020 |
| #4,989 | hypernode.io | ▲ 180 | 2014 |
| #5,010 | ves.io | ▲ 181 | 2017 |
| #5,027 | zeta-ai.io | ▲ 161 | 2023 |
| #5,248 | gofile.io | ▲ 16 | 2014 |
| #5,253 | lekton.io | ▲ 2,059 | 2022 |
| #5,270 | bose.io | ▲ 117 | 2013 |
| #5,315 | infura.io | ▲ 125 | 2016 |
| #5,342 | instana.io | ▼ 180 | 2014 |
| #5,391 | ussp.io | ▼ 51 | 2021 |
| #5,448 | nownodes.io | ▼ 5 | 2019 |
| #5,456 | etherscan.io | ▲ 21 | 2015 |
| #5,496 | voodoo-gaming.io | ▲ 194 | 2020 |
| #5,514 | blastapi.io | ▲ 3 | 2021 |
| #5,579 | 5ch.io | ▲ 208 | 2023 |
| #5,714 | grofer.io | ▼ 173 | 2016 |
| #5,715 | inmobi-choice.io | ▲ 43 | 2023 |
| #5,721 | dodois.io | ▲ 510 | 2018 |
| #5,746 | edgetcdn.io | ▲ 37 | 2020 |
| #5,772 | bidmatic.io | ▼ 80 | 2021 |
| #5,869 | osf.io | ▲ 4 | 2013 |
| #5,890 | mevblocker.io | ▼ 204 | 2023 |
| #5,916 | n8n.io | ▲ 22 | 2018 |
| #5,933 | p-n.io | ▲ 17 | 2018 |
| #6,022 | fsrv.io | ▼ 15 | 2026 |
| #6,034 | cloudez.io | ▼ 55 | 2017 |
| #6,243 | datagrail.io | ▲ 443 | 2017 |
| #6,258 | lunalabs.io | ▼ 6 | 2020 |
| #6,264 | pangle-b.io | ▲ 1,256 | 2020 |
| #6,319 | karte.io | ▲ 119 | 2013 |
| #6,369 | airbridge.io | ▲ 44 | 2015 |
| #6,464 | sourceforge.io | ▲ 278 | 2013 |
| #6,471 | smooch.io | ▲ 66 | 2015 |
| #6,481 | transcend.io | ▲ 76 | 2012 |
| #6,493 | 1rpc.io | ▼ 604 | 2022 |
| #6,604 | notvpn.io | ▲ 111 | 2022 |
| #6,632 | gamoshi.io | ▲ 1 | 2015 |
| #6,643 | meduza.io | ▲ 8 | 2014 |
| #6,648 | vsassets.io | ▲ 8 | 2015 |
| #6,750 | jfrog.io | ▲ 20 | 2013 |
| #6,848 | gravitational.io | ▲ 330 | 2015 |
| #6,858 | t13.io | ▼ 12 | 2019 |
| #6,862 | pinklion.io | ▼ 13 | 2024 |
| #6,866 | voodoo-tech.io | ▼ 21 | 2018 |
| #6,927 | kameleoon.io | ▲ 137 | 2019 |
| #7,045 | exodus.io | ▼ 113 | 2015 |
| #7,065 | superproxy.io | ▼ 141 | 2023 |
| #7,086 | cnn.io | ▼ 4 | 2000 |
| #7,104 | quay.io | ▲ 169 | 2013 |
| #7,139 | gitea.io | ▼ 140 | 2015 |
| #7,278 | ngrok.io | ▼ 148 | 2014 |
| #7,287 | smile.io | ▲ 28 | 2013 |
| #7,363 | coda.io | ▲ 122 | 2012 |
| #7,426 | apollo.io | ▲ 106 | 2018 |
| #7,472 | gwars.io | ▼ 31 | 2022 |
| #7,685 | extremereach.io | ▲ 102 | 2016 |
| #7,698 | prismic.io | ▲ 141 | 2013 |
| #7,720 | digitalaudience.io | ▲ 36 | 2017 |
| #7,756 | trezor.io | ▼ 48 | 2014 |
| #7,799 | wwiops.io | ▼ 228 | 2017 |
| #7,810 | receptivity.io | ▲ 332 | 2021 |
| #7,856 | pghub.io | ▼ 109 | 2020 |
| #8,336 | smartytech.io | ▲ 1,339 | 2022 |
| #8,516 | kaliscan.io | ▼ 177 | 2024 |
| #8,541 | envoyer.io | ▼ 360 | 2014 |
| #8,628 | kayzen.io | ▲ 118 | 2018 |
| #8,793 | openfpcdn.io | ▼ 91 | 2021 |
| #8,889 | plumenet.io | ▲ 169 | 2016 |
| #8,932 | hentaimama.io | ▼ 7 | 2019 |
| #8,979 | timewall.io | ▲ 441 | 2020 |
| #8,993 | tpmn.io | ▲ 72 | 2020 |
| #9,007 | hentai20.io | ▼ 8 | 2022 |
| #9,010 | jenkins.io | ▼ 196 | 2012 |
| #9,244 | stamped.io | ▲ 172 | 2016 |
| #9,324 | qt.io | – | 2013 |
| #9,419 | mgread.io | ▼ 405 | 2026 |
| #9,480 | cloudhub.io | ▼ 1,605 | 2012 |
| #9,489 | backtrace.io | ▲ 502 | 2013 |
| #9,512 | uakinogo.io | ▼ 6 | 2025 |
| #9,528 | classlink.io | ▲ 168 | 2016 |
| #9,562 | quago.io | ▼ 1,623 | 2022 |
| #9,648 | targetads.io | ▼ 261 | 2021 |
| #9,969 | adapty.io | ▲ 2 | 2019 |
| #10,000 | av-th.io | ▼ 67 | 2026 |