Tech Stack Detector — Bulk Website Technology Lookup

Detect the technology stack of any website in bulk. Identify 500+ technologies across 40+ categories including frameworks, CMS platforms, analytics tools, CDNs, hosting providers, chat tools, payment processors, security services, and more — with no API key required.

Uses five detection vectors inspired by the Wappalyzer open-source project:

• HTTP response headers — Server, X-Powered-By, CDN markers, cache headers
• HTML body patterns — Framework fingerprints, SDK includes, class names
• Meta generator tags — <meta name="generator"> for CMS/SSG detection
• Script source URLs — <script src> patterns for analytics, CDN, and widget SDKs
• Cookies — Session cookies, framework markers, consent flags
• Implies logic — If WordPress is detected, PHP is automatically added; if Next.js is detected, React and Node.js are added

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Use cases

• Lead qualification — Filter prospects by their tech stack before outreach. Target companies using Salesforce, HubSpot, or Shopify.
• Competitor research — Discover what your competitors are built on and which tools they use.
• Sales prospecting — Find companies using a technology your product integrates with or replaces.
• Agency audits — Quickly audit a client's existing stack before a migration or redesign project.
• Market research — Analyse what CMS, analytics, or hosting platforms a segment of the market has adopted.
• Due diligence — Verify the tech stack of a company you're acquiring or partnering with.

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Input

{
    "urls": [
        "https://vercel.com",
        "https://shopify.com",
        "https://wordpress.org"
    ],
    "maxConcurrency": 5
}

Field	Type	Required	Default	Description
urls	array of strings	Yes	—	Website URLs to analyse. https:// is added automatically if omitted.
maxConcurrency	integer	No	5	Parallel requests (1-50).

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Output

Each URL produces one item in the dataset:

{
    "url": "https://vercel.com",
    "technologies": [
        { "name": "Vercel", "category": "Hosting" },
        { "name": "Next.js", "category": "JavaScript Framework" },
        { "name": "React", "category": "JavaScript Framework" },
        { "name": "Node.js", "category": "Programming Language" },
        { "name": "Google Analytics", "category": "Analytics" }
    ],
    "techCount": 5,
    "categories": ["Hosting", "JavaScript Framework", "Programming Language", "Analytics"],
    "statusCode": 200,
    "status": "success",
    "error": null
}

Field	Description
url	Final URL after redirects
technologies	Array of detected technologies, each with name and category
techCount	Total number of technologies detected
categories	Unique categories present
statusCode	HTTP response status code
status	success or error
error	Error message if status is error, otherwise null

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Detected technology categories

Category	Examples
Web Server	Apache, Nginx, IIS, LiteSpeed, Caddy, Tomcat, Gunicorn
CDN	Cloudflare, Amazon CloudFront, Fastly, Akamai, BunnyCDN, Azure CDN
Hosting	Vercel, Netlify, GitHub Pages, AWS, Heroku, Render, Railway, Firebase
CMS	WordPress, Drupal, Shopify, Webflow, Wix, Squarespace, Ghost, Hugo, Jekyll
E-commerce	WooCommerce, Magento, BigCommerce, Shopware, Saleor, Snipcart
JavaScript Framework	React, Next.js, Vue.js, Angular, Nuxt, Svelte, Astro, Remix, Solid.js, Qwik
JavaScript Library	jQuery, Alpine.js, htmx, GSAP, D3.js, Three.js, Chart.js, Socket.io
CSS Framework	Bootstrap, Tailwind CSS, Bulma, Material UI, Chakra UI, Ant Design, DaisyUI
Analytics	Google Analytics, Hotjar, Mixpanel, Plausible, PostHog, Heap, Adobe Analytics, Umami
Tag Manager	Google Tag Manager, Adobe Launch, Tealium
Marketing	HubSpot, Mailchimp, Marketo, Klaviyo, ActiveCampaign, Braze, Sendinblue
Chat	Intercom, Drift, Zendesk, Crisp, Tawk.to, Tidio, Chatwoot, Help Scout
Payment	Stripe, PayPal, Square, Braintree, Klarna, Razorpay, Adyen
Security	Google reCAPTCHA, hCaptcha, Cloudflare Turnstile, Auth0, Clerk, Okta
Error Tracking	Sentry, Bugsnag, Rollbar, Raygun, LogRocket, Honeybadger
Monitoring	Datadog, New Relic, Dynatrace, Elastic APM, Pingdom
Programming Language	PHP, ASP.NET, Java, Python, Ruby, Node.js, Go
Web Framework	Rails, Django, Laravel, Express.js, Flask, Spring, NestJS, FastAPI
Font	Google Fonts, Adobe Fonts, Font Awesome, Material Icons
A/B Testing	Optimizely, VWO, Google Optimize, AB Tasty
Feature Flags	LaunchDarkly, Split.io, Statsig, Flagsmith
Search	Algolia, Elasticsearch, Typesense, Meilisearch
Media	Cloudinary, Imgix, Vimeo, YouTube Embed, Wistia, JW Player
Privacy	OneTrust, Cookiebot, TrustArc, Osano, iubenda
Forms	Typeform, JotForm, Gravity Forms, Tally
Social	Facebook SDK, Twitter/X Widgets, LinkedIn Insight, TikTok Pixel
Advertising	Google Ads, Facebook Pixel, Criteo, Taboola
Scheduling	Calendly, Cal.com, Chili Piper
Notifications	OneSignal, PushEngage, Firebase Cloud Messaging
WordPress Plugin	Yoast SEO, Elementor, WPBakery, Divi, Jetpack, WP Rocket
Accessibility	AccessiBe, UserWay, AudioEye
Performance	Varnish, Cloudflare Rocket Loader, Partytown, Service Worker
Build Tool	Webpack, Vite, Parcel, esbuild
CRM	Salesforce, Pipedrive, Zoho, HubSpot CRM
Backend	Firebase, Supabase, AWS Amplify, PlanetScale
Maps	Google Maps, Mapbox, Leaflet
Translation	Google Translate, Weglot, WPML
Comments	Disqus, Utterances, Giscus

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Pricing

$0.003 per URL successfully analysed (pay-per-event pricing).

• Failed requests (timeouts, network errors) are not charged.
• 1,000 URLs = $3.00
• 10,000 URLs = $30.00

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Performance

• Default concurrency: 5 parallel requests
• Typical latency: 500-1500 ms per URL (single HTTP request per site)
• Cap at 50 concurrent for large batches

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Limitations

• Detection is based on publicly visible signals in HTTP headers, HTML source, meta tags, script URLs, and cookies. Server-side technologies that leave no client-side traces may not be detected.
• Sites behind heavy bot protection (Cloudflare challenges, JavaScript-only rendering without static HTML) may return limited results.
• JavaScript-rendered content is not executed — detection is based on the initial HTML response.

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No API key required

This actor makes a single HTTP request per URL using a standard browser User-Agent. No authentication, no third-party services, no rate-limit tiers to manage.

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Run on Apify

No setup needed. Click above to run in the cloud. $0.003 per operation.