Scan the tech stack behind any company
Instantly see the tools a company uses — from frameworks to CRMs — via API or Chrome extension. Perfect for finding qualified leads and targeting the right accounts.
Detect +4000 technologies
Across 92 websites
Google Workspace (MX)
Cloudflare
Cloudflare DNS
PhotoShelter for Brands
HTTP/3
Tailwind CSS
Vercel DNS
Namecheap DNS
Google Tag Manager
core-js
Node.js
Google Analytics
Webpack
Amazon Web Services
Ruby
Ruby on Rails
Stimulus
Amazon S3
Google Cloud
Google Cloud CDN
Bootstrap
Google Font API
jQuery
React
Vercel
Heroku
jsDelivr
Moment.js
Webflow
HubSpot
API for company tech stacks
Detect technologies across subdomains and hiring signals, then see them grouped at the company level. Use this data to enrich leads, build lists, and power your workflows.
bump.sh
www.firecrawl.dev
job-boards.greenhouse.io
komin.io
www.uneed.best
videoly.com
[
{
"url": "job-boards.greenhouse.io",
"technologies": [
...
"AB Tasty",
"Adobe Target",
"Autopilot",
"Bloomreach Discovery",
"BrightInfo",
"Complianz",
...
]
}
]Multiple signals, one company stack view
We combine data from subdomains, job posts, GitHub repos, CDN calls, and DNS records to reveal the real technologies a company uses.
Smart Lists that build themselves
Turn detections into clean, shareable lists. Add items manually, set rules to auto-fill, or let scans update them for you. Your lists stay fresh, exportable, and ready to enrich — no more static spreadsheets.
| URL | Stack | Status |
|---|
Use cases that teams ship with
From prospecting to routing and research — pick a scenario and see how Techlens fits in.
Find stores using a specific Shopify app
Prospect stores already using the app you support (or a competitor), then pitch add-ons, migrations, or retainers.
Who · For web agencies & app partners
How · Scan in bulk, filter by Shopify + target app, export a Smart List.
curl -X POST https://api.techlens.io/api/v1/bulk/lookup \
-H "Authorization: Bearer $API_KEY" \
-H "Content-Type: application/json" \
-d '{"domains":["store1.com","store2.com","store3.com"]}'Enrich your data
Everything you need to scan any company's stack
Integrations
Connect with your CRM, marketing tools, or enrichment stack — from HubSpot to Zapier.
Performance
Fast by default with caching and fresh data. Switch on deep crawling via webhook.
Custom development
Need to detect a unique stack, or have a specific use case or workflow in mind? We can build a tailored solution just for you.
Powerful APIs
Access structured JSON responses for every lookup. Simple to use, reliable at scale, and developer-friendly.
{
"domain": "techlens.app",
"categories": [
{
"name": "Programming languages",
"technologies": [
{
"name": "Ruby on Rails",
"version": "8.0.0",
"description": "Server-side web application framework written in Ruby under the MIT License.",
"homepage_url": "https://rubyonrails.org",
"confidence": 100
}
]
}
]
}How do we compare to others?
Let's compare Techlens to other tech detection tools: Wappalyzer, BuiltWith, Apollo.
| What you compare |
Techlens
|
Others |
|---|---|---|
| Coverage & signals |
Aggregates multiple signals (subdomains, job posts, GitHub, CDN, DNS).
|
Mostly rely on homepage scans, without job or multi-signal aggregation.
|
| Company-level grouping |
Merges detections across domains into one clean company view.
|
Detections often siloed per URL, harder to map at company level.
|
| Database size |
Smaller DB today, but improving with every scan.
|
Bigger DBs, so they may detect some stacks faster out of the box.
|
| Smart Lists & workflow |
Unique Smart Lists that auto-update with rules and scans.
|
Mostly static exports, no list intelligence.
|
| Chrome extension |
Soon available, with in-context enrichments (e.g. LinkedIn).
|
Widely distributed extensions, but limited to homepage detection.
|
| Features beyond stack detection |
We focus on one thing: accurate stack detection. For enrichment, bring your own API key (Hunter, FullEnrich, etc.).
|
Broader feature set including enrichment, prospecting, and lead data.
|
| API pricing |
Indie-friendly (from 49€/mo for 2000 companies).
|
Enterprise-heavy pricing, designed for bigger budgets.
|
| Future roadmap |
Building MCP integration and other dev-first features.
|
Mature tools with wider adoption but slower to innovate in signals.
|
Coverage & signals
Company-level grouping
Database size
Smart Lists & workflow
Chrome extension
Features beyond stack detection
API pricing
Future roadmap
See your first stack in minutes
Start with a single domain or a CSV. We enrich with multiple signals and group by company so your data is immediately usable.
Frequently Asked Questions
Get answers to common questions about Techlens, our tech stack detection, and how it can help your business.
What is Techlens and how does it work?
Techlens is a tech stack detection tool that identifies the technologies used by any company. We scan websites, subdomains, job posts, GitHub repos, and DNS records to build a comprehensive view of a company's tech stack. You can use our API for bulk lookups or our Chrome extension for on-the-fly detection.
How is Techlens different from Wappalyzer or BuiltWith?
Unlike tools that only scan homepage URLs, Techlens aggregates multiple signals (subdomains, job posts, GitHub, CDN, DNS) and groups detections at the company level. We also offer Smart Lists that auto-update with rules, making your data immediately usable rather than static exports.
What technologies can Techlens detect?
We detect over 4,000 technologies including frameworks (React, Rails, Django), hosting providers (AWS, Vercel, Netlify), CRMs (HubSpot, Salesforce), analytics tools (Google Analytics, Mixpanel), and much more. Our database grows with every scan.
How accurate is the tech stack detection?
Our multi-signal approach provides higher accuracy by cross-referencing data from multiple sources. We show confidence scores for each detection and continuously improve our algorithms based on real-world usage patterns.
Can I use Techlens for lead generation and prospecting?
Absolutely! Techlens is perfect for finding qualified leads. Create Smart Lists with rules like 'Rails + HubSpot (not Tailwind)' to target specific tech combinations. Export lists for your CRM or use our API to enrich leads in real-time.
What's the difference between the API and Chrome extension?
The API is designed for bulk operations, integrations, and automated workflows. The Chrome extension (coming soon) provides instant tech stack detection while browsing LinkedIn, company websites, or any page - perfect for on-the-fly research.
How do Smart Lists work?
Smart Lists are dynamic lists that automatically update based on rules you set. For example, create a list for 'Shopify stores using Klaviyo' and it will populate as we scan more websites. No more static spreadsheets that go stale.
What's your pricing and do you offer a free tier?
We offer indie-friendly pricing starting at €49/month for 2,000 company lookups. There's a free tier to get started and test the platform. Enterprise pricing is available for high-volume usage.
Can I integrate Techlens with my existing tools?
Yes! Our API integrates with popular tools like HubSpot, Zapier, Clay, and Hunter. You can also use webhooks for real-time updates and custom development for specific use cases.
How fast are the API responses?
Most lookups return in under 1 second thanks to our caching system. For fresh data, we offer webhook-based deep crawling that can take up to 30 seconds for comprehensive analysis.
Do you offer custom development for specific use cases?
Yes! If you need to detect unique technologies or have specific workflow requirements, we can build tailored solutions. Contact our support team to discuss your needs.
What data do you collect and how is it stored?
We only collect publicly available information from websites and job postings. All data is stored securely and we comply with GDPR and other privacy regulations. We don't collect personal information or private company data.