CAPTCHA
CAPTCHA features technologies that distinguish human users from bots to enhance online security. It helps protect websites from automated threats and misuse.
4
technologies
1,235
companies
List of companies using CAPTCHA
curl --request POST \
--url "https://api.theirstack.com/v1/companies/search" \
--header "Accept: application/json" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <api_key>" \
-d "{
\"tech_filters\": {
\"technology_category_slug_or\": [
\"captcha\"
]
}
}"
Employees5kRevenue$453MHospitals and Health Care
reCAPTCHAHigh confidence

Employees3kRestaurants
reCAPTCHAHigh confidence

Employees84Higher Education
reCAPTCHAHigh confidence

Employees427Commercial and Industrial Machinery Maintenance
reCAPTCHAHigh confidence
Employees5Higher Education
reCAPTCHAHigh confidence

Employees20Venture Capital and Private Equity Principals
reCAPTCHAHigh confidence

Employees379Engineering Services
reCAPTCHAHigh confidence

Employees27kRevenue$600MIT Services and IT Consulting
reCAPTCHAHigh confidence

Employees439Renewable Energy Power Generation
reCAPTCHAHigh confidence

Employees143Revenue$345kIT Services and IT Consulting
reCAPTCHAHigh confidence
We have data on 1.2k companies and users that use CAPTCHA. Our CAPTCHA users and customers list is available for download and comes enriched with vital company specifics, including industry classification, organizational size, geographical location, funding rounds, and revenue figures, among others.
Frequently asked questions