Pick one or more technologies, a site type, or both, then a country if you want, and get the matching websites: domain, site type, confidence score, main country and detected technologies.
Start finding companies by tech stack →Install the add-on and enrich your lists without leaving your spreadsheet.
Install in Google Sheets →
25 SaaS websites on Stripe, each with its type score, country and stack.
https://app1.derrick-app.com/mcp Call the same enrichment endpoints straight from your own stack or workflow.
Read the API docs →You give
One or more technologies, or just a site type
You get back
+2 type_score, main_country
Demo finished
Import your list into the Derrick app and enrich your own leads. Free to start, no credit card.
Try the app free →Try it
The output
5 fields, with a real example of each. You pay when the answer comes back, and never when it does not.
| Field Name | Description | Example |
|---|---|---|
| domain | Website domain of the company found | cabaia.fr |
| site_type | Site type confirmed from the homepage: ecommerce, saas, media or other (empty when unknown) | ecommerce |
| type_score | Confidence in the site type, from 0 to 1 (empty when no site type filter is set) | 0.99 |
| main_country | Main country of the site, two-letter code | fr |
| technologies | Technologies detected on the site, comma-separated | Shopify, Klaviyo, Google Analytics |
Step by step
Get started in 3 simple steps.
Choose one or more technologies (Shopify, Stripe, HubSpot...), a site type (E-commerce, SaaS, Media, Other), or both. One of the two is enough: every SaaS in France works with no technology at all. Country and size only narrow the list.
It reads each site's homepage live and scores it on its stack and its content, so a site marked SaaS is one whose homepage confirms it, not a guess.
Domain, site type, confidence score, main country and detected technologies land in a new sheet, Companies by tech stack, one company per row.
When to reach for it
Turn a technology, a site type, or both into a list of companies. Pick one or more technologies (Shopify, Stripe, HubSpot...), a site type (E-commerce, SaaS, Media, Other), or both: one of the two is enough. A country and a size filter only narrow the list. Derrick returns the matching websites, one company per row in a new sheet: domain, site type, confidence score, main country and detected technologies. Each homepage is read live, so the site type is confirmed, not guessed. 1 credit per company returned, on paid plans.
E-commerce prospecting
list the Shopify stores in France and start the conversation.
SaaS targeting
find SaaS companies that bill with Stripe, with the SaaS type confirmed on each homepage.
Agency pipeline
spot WordPress media sites that could use a redesign or a migration.
Market mapping
every SaaS in a country, no stack needed, from the site type alone.
For your stack
Find Companies by Tech Stack isn't tied to one surface. Every Derrick enrichment - this one included - runs in the web app and in Google Sheets, and is also exposed through the REST API and the MCP server, so you can run it from your CRM, your data pipeline, an AI assistant, or any no-code tool (Zapier, Make, n8n). Same credit cost everywhere, same data. API access is included from the PLUS plan up.
Customer stories
See what our customers say about Derrick.
"This app saved me so much time and effort. Great for anyone looking to build a contact list or network at scale quickly. As a start-up it's been invaluable."
Director | SaaS GTM Leader
"Working pretty nifty compared to Snov.Io. Price wise it does give a fair shake, and IMO better interface since it's google sheets."
Mortgage Broker at Zero Point Mortgage
"Derrick is a very simple and user-friendly app to enrich your contacts database. Best thing: you can test it for free. And then the price is so low, it's a no brainer."
CEO Form'actions
"I have been using other expensive apps or freemium like phantombuster, but Derrick has replaced them all. I love the simplicity of the Google sheet add-in, but what is best is the efficiency it delivers."
CEO & Co-founder @ Diffly | B2B Sales Advisor
"Super easy to enrich linkedin urls using this tool. Both personal and company url data can be easily enriched with a click of a button."
RevOps Professional
"Amazing Tool, I would like to advocate this to my colleagues. So that you can get more users. Keep it Up. 5 Stars!"
Lead Generation Specialist at IdeaPeel
"The LinkedIn scraping and email finder combo is incredibly powerful. I can build a complete prospect list with contact info in under an hour. Absolute must-have for outbound."
SDR Team Lead at CloudScale
"This app is fantastic. Brilliantly created to help small and mid sized businesses."
Founder/CEO, AlmanacIO
"Have tested over 10+ LI scraper apps, Derrick beats them all. Simple to use, accurate data, and affordable price."
Opportunity Prospector
Selling to the companies that run a given tool is one of the sharpest ways to build an account list: an agency that builds Shopify themes wants Shopify stores, a billing add-on wants companies on Stripe, a HubSpot partner wants HubSpot users. The stack shows on each website, but finding every site that runs it, one by one, does not scale.
Derrick starts from the technology or the kind of site instead of the website. Pick one or more technologies, a site type (E-commerce, SaaS, Media, Other), or both: one is enough, so every SaaS in France works with no stack. A country and a size filter only narrow the list. Ask for 25 to 20,000 results. Derrick reads each homepage live and scores the site type, so SaaS means the homepage confirms it. In our test, a Stripe + SaaS search in Reliable mode returned 50 SaaS out of 50, none scored below 0.90; Broad mode brings more sites with a few mistakes. It runs in the Derrick web app, in Google Sheets, in Claude through the MCP server and through the API, on paid plans, at 1 credit per company returned. See the Derrick pricing grid.
Choose a stack, a site type, or both, then a country. Derrick returns the websites that match, ready for you to find the right people and their emails.
Install the add-on and enrich your lists without leaving your spreadsheet.
Install in Google Sheets → 
https://app1.derrick-app.com/mcp Call the same enrichment endpoints straight from your own stack or workflow.
Read the API docs →No, it runs on paid plans only. Paid plans start at €20/month for 10,000 credits, and each company returned costs 1 credit.
Derrick reads each site's homepage live and scores it on its stack and its content. The score lands in the type_score column, from 0 to 1. Reliable mode keeps only sure matches (a score of 0.8 or more); in our test, a Stripe + SaaS search in Reliable mode returned 50 SaaS out of 50, none below 0.90. Broad mode returns more sites, with a few mistakes.
No. You need at least one technology or a site type, not both. Pick SaaS and France with no technology and you get every SaaS in France that Derrick finds. The country and the size filter only narrow the list.
From 25 up to 20,000. Big lists arrive in several chained runs, automatically, in the same Companies by tech stack sheet.
It leaves out the biggest sites on the web: the 1,000, 10,000, 100,000 or 1,000,000 biggest. Use it to reach smaller companies, or keep Any size to get everything.
Find Companies by Tech Stack runs in the Derrick web app, in Google Sheets, in Claude or any MCP client through the Derrick MCP server (the derrick_find_companies_by_tech_stack tool), and through the REST API (the find_companies_by_tech_stack action). One API call returns up to 500 companies with a site type, or 5,000 without; pass offset 0 first, then the next_offset returned, to page through the rest.