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ClientJS

JavaScript libraries Browser fingerprinting Visit clientjs.org

ClientJS is a JavaScript library for generating browser fingerprints, exposing all the browser data-points.

Lead List Exporter

174 live ClientJS sites, ready to export.

That's how many ClientJS websites are in VersionDB right now, each with its full tech stack, contact details, and social profiles.

Pick a ready-made template, or build your own filters in the Lead List Exporter and pay only for the rows you export.

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Start with a list template
ClientJS companies in the United States

Every ClientJS website we detected in the US.

Companies with personnel emails

Only sites where a personal, company-hosted email was found.

Decision makers on LinkedIn

Sites with at least one personnel LinkedIn profile.

Top 100,000 ClientJS sites by traffic

Start with the highest-traffic end of the dataset.

Sites on a .com domain

Limit results to ClientJS websites on .com domains.

Companies with phone numbers

Only sites where an organisation phone number was found.

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Complementary Technologies

ClientJS Complementary Technologies

Technologies frequently found with ClientJS.

ClientJS Versions
VersionSites
0166
25
5272
2023081010371
Most Frequent Complementary Tech
Cloudflare 133
cdnjs 130
jQuery 125
Bootstrap 105
Apache HTTP Server 103
HSTS 62
PHP 43
DataTables 35
Nginx 35
jsDelivr 35
Live Websites

Websites Using ClientJS

Live sites we caught running ClientJS in the wild, straight from the latest crawl.

DomainServer LocationASNCrawl Date
evertry.co🇨🇴 ColombiaCloudflare, Inc.July 27, 2026
wsb.pl🇵🇱 PolandTalex S.A.July 27, 2026
zeyobron.com🇮🇳 IndiaCloudflare, Inc.July 25, 2026
megatec-center.com UnknownCloudflare, Inc.July 25, 2026
iqr30.com UnknownCloudflare, Inc.July 25, 2026
jdr-odyssee.net🇫🇷 FranceScaleway SASJuly 24, 2026
southtravels.com🇦🇪 United Arab EmiratesHostinger International LimitedJuly 24, 2026
easybus.com UnknownCloudflare, Inc.July 24, 2026
esii-orion.com🇫🇷 FranceMicrosoft CorporationJuly 24, 2026
sibprime.ru🇷🇺 RussiaJSC ER-Telecom HoldingJuly 24, 2026
Identifiers

Top ClientJS Identifiers

Who is using ClientJS and where: top five by detected sites.

Technology
Cloudflare 133
cdnjs 130
jQuery 125
Bootstrap 105
Apache HTTP Server 103
Language
Arabic 77
English 48
French 12
Italian 5
Polish 4
ASN
OVH SAS 77
Amazon.com, Inc. 22
Cloudflare, Inc. 11
TDC Holding A/S 5
Hetzner Online GmbH 4
TLD
com 95
net 13
fr 7
pl 6
ch 4
Country
France 66
Germany 27
United States 22
Unknown 13
United Kingdom 6
Deep Dive

Most Frequent ClientJS Identifiers and Complementary Tech

Most frequently encountered identifiers for ClientJS and its complementary technologies.

TechnologySites
Cloudflare133
cdnjs130
jQuery125
Bootstrap105
Apache HTTP Server103
HSTS62
PHP43
DataTables35
Nginx35
jsDelivr35
Google Analytics30
Node.js26
Socket.io24
Google Tag Manager22
HTTP/320
jQuery Migrate20
jQuery UI19
MySQL18
WordPress17
reCAPTCHA17
Microsoft ASP.NET15
jQuery CDN15
Google Hosted Libraries13
Popper12
Java11