Competitor displacement
Companies already using a competing product, which means the category is validated and budget may already exist.
Klarna
Shopify
Spotify
Stripe runs the stack you plug into · 4h agoIntegration fit
Siemens has the base your product builds on · 5h agoPrerequisite technology
Walmart already buys in your category · 6h agoCategory adoption
Amazon is investing in the tool right now · 3h agoTech plus use case
Lovable has no tool for this yet · 5h agoStack gap
Why it works
A company that already pays for a competitor has a budget for your category and a team that knows what it wants from the tool. You don't have to prove the need, only that your product does the job better, costs less or is easier to switch to. Job posts also show how deep the tool runs: a company asking for it in many roles is harder to move than one that names it once.
How to act on it
Run a replacement play with migration, cost, capability, or support positioning.
Competitor displacement: 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 signal 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": ["hubspot"] }'
Claude
ChatGPT
Cursor
VS Code
Windsurf
Cline
OpenCode
Gemini
Hermes
OpenClaw
Clay
n8n
Make
Zapier
Databar
Salesforce
HubSpot
Attio
Pipedrive
Apollo
Instantly
ContactOutUse cases
- Outbound
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.
See the use case →
Related signals
Integration fit
Companies using a tool your product integrates with.
ExampleSnowflake and dbt named across 5 data roles
Your product connects to both
Prerequisite technology
Companies using an underlying technology that often creates demand for your product.
ExampleKubernetes appears in 6 engineering roles
Observability tooling usually follows
Tech plus use case
Companies running a technology and hiring for the workflow it supports.
ExampleRuns Salesforce and posts 2 Salesforce Administrator roles
The tool is tied to an active project
Learn how
- 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.
- 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.
Your competitor already sold them the category.
Find the companies running a rival product, and pitch the switch to teams that already pay for what you do.
Start free: 200+ free credits.