Find companies by the technology they use

Posting a job is the strongest signal that a company has a pain. We scrape millions of them per month and let you detect companies’ intents and tech stacks at scale.

Common searches

Trusted by the world’s most innovative sales and marketing teams

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How does it work?

Reach out to the right customers in 3 steps

Sign up, refine your search criteria based on your growth strategy, and connect with new clients.


Create an account

Create an account and access TheirStack's database of 4M+ companies.


Find high-intent companies

Apply our unique set of buying signals filters to refine your search and discover companies ready to buy your product or services.


Grow faster

Build personalized messages and ad campaigns targeting the right people at the right time, using our data and our integrations.

TheirStack let us optimize our lead qualification process to increase sales, enriching our leads with tech stack data that we couldn’t find anywhere else.

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Jasper Flour
Growth at Stacker

Theirstack's data revolutionized our targeting, replacing ambiguity with laser-guided precision. With detailed, real-time insights, our engagement and conversion rates grew by two-digit numbers. It's a game-changer!

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Denis Shershnev
CEO and Founder at 6nomads

TheirStack allowed us to find companies with the pains our product solves, identify who the ICPs were and write highly personalized emails to reach them.

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Andrés Lozano
Head of Sales at Graphext

Ready to dive in?

Sign up now or get a call with us - We'd love to learn more about your use case!