Find companies that use the technology you work with
Find the companies running the platform you implement, integrate with or staff for, scoped to your market and company size.
Who it's for: A seller whose offer is tied to a technology or ecosystem: an implementation partner, an agency, a staffing firm, or a product with a complementary integration.
Lovable posted a Salesforce Administrator role · 1h agoTech plus use case
Klarna is hiring to migrate its CRM to Salesforce · 6h agoCompetitor displacement
Shopify posted a role on its Snowflake data platform · 1d agoIntegration fit
How finding companies by their technology works
TheirStack builds technographic data from job posts: it finds the companies running the platform you implement, integrate with or staff for, tells you how sure it is, and narrows the list to your market so each offering gets a short list of accounts that fit.
Find
Find the companies running your platform
TheirStack finds the technologies a company names in its job posts, so you can list the companies that run a tool.
- Technologies found in job posts
- A confidence level on every technology
- Narrow by country and company size
Prioritise
Keep the accounts that fit your offer
TheirStack shows how sure it is of each technology and the job posts it found it in, so you start with confirmed users that are working on it now.
- Medium and high confidence first
- Hiring for the tool right now
- Size the market before you reach out
KlarnaMoving from HubSpot to Salesforce · 6h agoHighLovableHiring its first Salesforce admin · 1h agoHigh
SiemensSalesforce named in 2 job posts · 2d agoMediumShopifyOne old Salesforce mention · 30d agoLowExport
Send each offering its own list
TheirStack exports the companies as CSV or Excel, or opens them in Find people, so each offering goes to the team that owns the platform.
- CSV, Excel or the Company Search API
- Find people in Apollo, ContactOut, LinkedIn
- One short list per offering
Salesforce accounts by offering
KlarnaMoving sales and support off HubSpotMigrationLovableGrowing sales team, first adminManaged adminSiemensSalesforce next to SAPIntegrationSpecific scenarios
- Try →
Find companies using a competitor's product
Sell a switch to your product to accounts that already pay for a tool in your category.
Learn how
- Guide
How to Find Companies by Technology Stack
Step-by-step guide to finding companies that use specific technologies. Build targeted lead lists by filtering companies based on their tech stack, combined with firmographic data like size, industry, and funding.
- Guide
How to Build a Targeted Lead List Using Technographic Data
Step-by-step guide to building targeted sales lead lists by filtering companies based on their tech stack using TheirStack's 33k+ technology database.
- Guide
How to Target Companies by the Technology They Use
Learn three proven strategies for targeting companies based on their tech stack — must-have technologies, competitor customers, and partner integrations — to build high-fit prospect lists.
- Customer story
Qonto uses TheirStack to detect companies with high intents
Discover how Qonto collaborates with TheirStack to identify highly prospective companies that are actively recruiting to address challenges like expense reporting and bank reconciliation, which Qonto's solutions can adeptly resolve.
Find companies that use the technology you work with: integrations with AI assistants, automations and CRMs
TheirStack works with the AI assistants, automation tools and CRMs you already use: ask Claude or ChatGPT through the MCP server, send new matches to Clay, n8n, Make or Zapier by webhook, and create leads in Salesforce or HubSpot.
AI assistants
Ask Claude, ChatGPT, Cursor or any MCP client to search jobs, companies and tech stacks through the TheirStack MCP server.
MCP server
https://api.theirstack.com/mcpAutomations
TheirStack sends every new matching company by webhook as soon as it finds it, to your automation platform or through it into your CRM and sales tools.
CRMs and sales tools
Run this use case from your own code
curl -X POST https://api.theirstack.com/v1/companies/search \ -H "Authorization: Bearer YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "company_technology_slug_or": ["salesforce"], "company_country_code_or": ["DE"], "min_employee_count": 50, "max_employee_count": 500 }'
Claude
ChatGPT
Cursor
VS Code
Windsurf
Cline
OpenCode
Gemini
Hermes
OpenClaw
Clay
n8n
Make
Zapier
Databar
Salesforce
HubSpot
Attio
Pipedrive
Apollo
Instantly
ContactOutYour next client already runs your platform.
Find the companies using the technology you work with, in your market and at the size you serve.
Start free: 200+ free credits.