// javascript libraries

Websites that use ClientJS in 2026

We track 148 websites running ClientJS across 26 industries and 22 countries. Browse a sample of 82 matched company profiles below, each with industry, location, and verified contact data.

industries: 26
countries: 22
websites tracked: 148

Domain, industry and country per company

Free CSV export

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Free instant access · 82 verified ClientJS customers

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Companies using ClientJS

Showing 25 of 82

Website	Company	Industry	HQ
justherbs.in	Just Herbsjustherbs.in	Soap and Cleaning Product Manufacturing	IN
southtravels.com	South Travelssouthtravels.com	travel arrangements	AE
thueringer-energienetze.com	TEN Thuringian Energy Networksthueringer-energienetze.com	Utilities	DE
ulpgc.es	University of Las Palmas de Gran Canariaulpgc.es	Higher Education	ES
ubiobio.cl	University of Bio-Bioubiobio.cl	Higher Education	CL
livehelper.com	Live Helperlivehelper.com	Information Services	US
clarkson.edu	Clarkson Universityclarkson.edu	Higher Education	US
purdue.edu	Purdue Universitypurdue.edu	Higher Education	US
ca.gov	State of Californiaca.gov	Government Administration	US
berkeley.edu	UC Berkeleyberkeley.edu	Higher Education	US
liu.edu	Long Island Universityliu.edu	Higher Education	US
uqtr.ca	Université du Québec à Trois-Rivièresuqtr.ca	Higher Education	CA
ua.edu	University of Alabamaua.edu	Higher Education	US
conncoll.edu	David Dorfman Danceconncoll.edu	Higher Education	US
regent.edu	Regent Universityregent.edu	Higher Education	US
lafayette.edu	Lafayette Collegelafayette.edu	Higher Education	US
mtu.edu	Michigan Technological Universitymtu.edu	Higher Education	US
onu.edu	Ohio Northern Universityonu.edu	Higher Education	US
univ-brest.fr	UBO - Univ. Brestuniv-brest.fr	Higher Education	FR
msstate.edu	Mississippi State Universitymsstate.edu	Higher Education	US
purchase.edu	SUNY Purchasepurchase.edu	Higher Education	US
sfasu.edu	Stephen F. Austin State Universitysfasu.edu	Higher Education	US
apu.edu	Azusa Pacific Universityapu.edu	Higher Education	US
cmu.ac.th	Chiang Mai Universitycmu.ac.th	Higher Education	TH
fingercheck.com	Fingercheckfingercheck.com	Human Resources	US

Refine to your ICP

Narrow these 82 companies down to the ones that match your ideal customer profile.

Revenue range Headcount Tech stack Funding stage Hiring signals Buyer intent Job title Location Founded year

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Industry breakdown

30 (37%)

Higher Education

7 (9%)

Information Services

4 (5%)

Research Services

3 (4%)

Education Management

3 (4%)

Government Administration

How many websites use ClientJS?

We track 148 websites that use ClientJS in 2026. Those sites span 26 industries and 22 countries. The crawler re-checks each domain daily. So the count moves as sites adopt ClientJS or drop it.

ClientJS belongs to the JavaScript libraries category. Sites in that category tend to share a similar stack. As a result, they often share buying patterns too.

The table above shows a sample of 82 matched companies. Each row carries an industry, a country, and a live domain. You can search it, sort it, and export it.

Which industries use ClientJS most?

Adoption is not spread evenly. Instead, a few industries account for most of the matched sample:

Higher Education36.58536585365854%
Information Services8.536585365853659%
Research Services4.878048780487805%
Education Management3.6585365853658534%
Government Administration3.6585365853658534%

Higher Education leads that list. However, the long tail matters just as much. Adoption reaches 26 industries in total. So you can narrow the list to the segment you sell into.

Where are websites that use ClientJS based?

The matched companies sit in 22 countries. These lead the sample:

United States 24
France 16
India 4
United Kingdom 4
Germany 3

United States is the largest single market in this sample. Because the country is stored per row, you can filter before you export. That keeps your outreach inside one timezone and one legal regime.

How to find websites that use ClientJS

Start with the table above. Then follow these four steps to turn it into an outreach list:

Filter the sample. Narrow by industry or country until the rows match your ideal customer profile.
Export the domains. Share the page to unlock the CSV, or sign in for the full dataset.
Find the people. Run each domain through Domain Search to pull every work email behind it.
Verify before you send. Pass the results through the Email Verifier so your bounce rate stays low.

Working at volume? Push the whole export through Bulk Tasks instead, or call the Domain Search API directly from your own stack.

Frequently asked questions

How many websites use ClientJS?

We track 148 websites that use ClientJS. The index refreshes daily, so the number shifts as sites adopt or drop it. Of those, 82 are matched to a company profile with industry, location, and contact data.

Can I download the list of websites that use ClientJS?

Yes. Share the page on LinkedIn to unlock a CSV export of the matched sample, with no signup required. For the full dataset and verified email addresses, create a free Tomba account.

Which industries use ClientJS the most?

Higher Education leads the matched sample, at 36.58536585365854% of companies. In total, websites that use ClientJS span 26 industries.

How fresh is the ClientJS data?

Our crawler re-checks technology signals daily. So a site that removes ClientJS drops out of the index, and a new adopter appears without you refreshing anything.

Can I get email addresses for websites that use ClientJS?

Yes. Every domain in the table can be enriched with verified work emails and direct phone numbers. Run a single domain through Domain Search, or push the whole export through Bulk Tasks.

// get this list by api

Companies using ClientJS, one request away

Filter the company search by technology, then find and verify the people at each company. The technology filter is available on paid plans; 50 companies per page.

01POST/reveal/searchCompanies that match a plain-language query or filters1 search credit 02GET/domain-searchThe email addresses at a company, with names, roles and the company profile1 search credit per 10 results 03GET/email-verifierWhether an address is deliverable: syntax, MX, SMTP, catch-all and greylisting checks1 verification credit

POST /reveal/search

curl -X POST "https://api.tomba.io/v1/reveal/search" \
  -H "X-Tomba-Key: $TOMBA_API_KEY" \
  -H "X-Tomba-Secret: $TOMBA_SECRET_KEY" \
  -H "Content-Type: application/json" \
  -d '{"filters":{"technologies":{"include":["ClientJS"]}},"page":1}'

const res = await fetch("https://api.tomba.io/v1/reveal/search", {
  method: "POST",
  headers: {
    "X-Tomba-Key": process.env.TOMBA_API_KEY,
    "X-Tomba-Secret": process.env.TOMBA_SECRET_KEY,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({"filters":{"technologies":{"include":["ClientJS"]}},"page":1})
});
const { data } = await res.json(); // data.companies

import os, requests

res = requests.post(
    "https://api.tomba.io/v1/reveal/search",
    headers={
        "X-Tomba-Key": os.environ["TOMBA_API_KEY"],
        "X-Tomba-Secret": os.environ["TOMBA_SECRET_KEY"],
    },
    json={"filters":{"technologies":{"include":["ClientJS"]}},"page":1},
)
companies = res.json()["data"]["companies"]

// technologies

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Websites that use ClientJS in 2026

Download the 82 ClientJS customers

Companies using ClientJS

Refine to your ICP

Industry breakdown

How many websites use ClientJS?

Which industries use ClientJS most?

Where are websites that use ClientJS based?

How to find websites that use ClientJS

Frequently asked questions

Companies using ClientJS, one request away

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