// javascript libraries

Websites that use JsObservable in 2026

We track 393 websites running JsObservable across 35 industries and 32 countries. Browse a sample of 100 matched company profiles below, each with industry, location, and verified contact data.

industries: 35
countries: 32
websites tracked: 393

Domain, industry and country per company

Free CSV export

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Companies using JsObservable

Showing 25 of 100

Website	Company	Industry	HQ
concessionariatamoios.com.br	Concessionaria Tamoiosconcessionariatamoios.com.br	Facilities Services	BR
kapook.com	Kapook.comkapook.com	Information Technology and Services	TH
fudan.edu.cn	Fudan University School of Managementfudan.edu.cn	Higher Education	CN
hfut.edu.cn	Hefei University of Technologyhfut.edu.cn	Higher Education	CN
ivb.hr	Istarski vodovod d.o.o. Buzetivb.hr	Utilities	HR
sendengo.com	Sendengosendengo.com	Transportation, Logistics, Supply Chain and Storage	MX
sgic.co.kr	Seoul Guarantee Insurancesgic.co.kr	Insurance	KR
sfv.at	Salzburg Football Associationsfv.at		AT
buro247.ru	Buro 24/7buro247.ru	Information Technology and Services	RU
sgsdt.com	System Global Servicessgsdt.com	Program Development	US
tju.edu.cn	Tianjin Universitytju.edu.cn	Research Services	CN
totaleintegrated.com	Total e Integratedtotaleintegrated.com	Information Technology and Services	CA
tongji.edu.cn	Tongji MBA Programtongji.edu.cn	Higher Education	CN
taltech.ee	Ragnarok 2.0taltech.ee	Research Services	EE
peugeot.com.au	West Car Salespeugeot.com.au	Retail	AU
b-seminar.ru	B-SEMINAR.RUb-seminar.ru	Information Services	RU
cuentica.com	Cuenticacuentica.com	Financial Services	ES
cumt.edu.cn	China University of Mining and Technologycumt.edu.cn	Education Management	CN
thomsonreuters.com	Thomson Reutersthomsonreuters.com	Information Services	US
senac.br	Senac Brasilsenac.br	Higher Education	BR
hust.edu.cn	Huazhong University of Science and Technologyhust.edu.cn	Biotechnology	CN
shoplocal.com	ShopLocal LLCshoplocal.com	Marketing Services	US
aucklandcouncil.govt.nz	Auckland Councilaucklandcouncil.govt.nz	Government Administration	NZ
tsinghua.edu.cn	Tsinghua Universitytsinghua.edu.cn	Higher Education	CN
scholastic.ca	Scholastic Canadascholastic.ca	book and periodical publishing	CA

Refine to your ICP

Narrow these 100 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

19 (19%)

Higher Education

10 (10%)

Research Services

5 (5%)

Information Technology and Services

5 (5%)

Hospitals and Health Care

4 (4%)

Education Management

How many websites use JsObservable?

We track 393 websites that use JsObservable in 2026. Those sites span 35 industries and 32 countries. The crawler re-checks each domain daily. So the count moves as sites adopt JsObservable or drop it.

JsObservable 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 100 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 JsObservable most?

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

Higher Education19%
Research Services10%
Information Technology and Services5%
Hospitals and Health Care5%
Education Management4%

Higher Education leads that list. However, the long tail matters just as much. Adoption reaches 35 industries in total. So you can narrow the list to the segment you sell into.

Where are websites that use JsObservable based?

The matched companies sit in 32 countries. These lead the sample:

China 25
United States 22
Austria 6
Italy 4
Japan 3

China 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 JsObservable

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 JsObservable?

We track 393 websites that use JsObservable. The index refreshes daily, so the number shifts as sites adopt or drop it. Of those, 100 are matched to a company profile with industry, location, and contact data.

Can I download the list of websites that use JsObservable?

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 JsObservable the most?

Higher Education leads the matched sample, at 19% of companies. In total, websites that use JsObservable span 35 industries.

How fresh is the JsObservable data?

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

Can I get email addresses for websites that use JsObservable?

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 JsObservable, 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":["JsObservable"]}},"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":["JsObservable"]}},"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":["JsObservable"]}},"page":1},
)
companies = res.json()["data"]["companies"]

// technologies

Other technologies to explore

Websites that use JsObservable in 2026

Download the 100 JsObservable customers

Companies using JsObservable

Refine to your ICP

Industry breakdown

How many websites use JsObservable?

Which industries use JsObservable most?

Where are websites that use JsObservable based?

How to find websites that use JsObservable

Frequently asked questions

Companies using JsObservable, one request away

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