Website Tech Stack Detector – BuiltWith Wappalyzer Alternative

Give it up to 50 website URLs and get one row per site naming the technologies it runs — CMS, e-commerce platform, JavaScript framework, analytics, marketing tools, CDN, hosting, server stack and payment provider — matched against 39 named fingerprints on the fully rendered page. Built for sales prospecting, competitive analysis and market research, as an open-source alternative to BuiltWith and Wappalyzer lookups.

Features

• 39 named technologies — WordPress, Shopify, Wix, Squarespace, Webflow, Ghost, Drupal, Joomla, WooCommerce, Magento, BigCommerce, React, Vue.js, Angular, Next.js, Nuxt.js, Svelte and more (full list below)
• Multi-Layer Analysis — HTTP headers, HTML metadata, JavaScript patterns, DOM attributes
• Fast & Reliable — Powered by Crawlee with Playwright Chrome
• Bulk Processing — Analyze up to 50 websites per run
• Detailed Results — Technology list, server info, HTTP status, disclaimers
• Pay-Per-Event Pricing — $0.05 per website analyzed

Detected technologies

Every name below is a fingerprint in the detection engine. The Signal column says what the engine looks for on the live page, so you know why a technology was (or was not) reported.

CMS and website builders

Technology	Signal
WordPress	wp-content/, wp-includes/ script paths; generator meta tag
Shopify	cdn.shopify.com scripts; Shopify.theme, shopify-section markup; x-shopid header
Wix	static.wixstatic.com scripts; wix-code-sdk markup
Squarespace	static.squarespace.com scripts; generator meta tag
Webflow	webflow.js; data-wf- attributes; generator meta tag
Ghost	generator meta tag; x-ghost-cache-status header
Drupal	drupal.js, /sites/default/ paths; data-drupal- attributes; x-generator header
Joomla	/media/jui/ paths; generator meta tag

E-commerce platforms

Technology	Signal
WooCommerce	woocommerce scripts, wc-ajax endpoints, wc_ markup
Magento	mage/cookies scripts; data-mage- attributes
BigCommerce	cdn11.bigcommerce.com scripts
Shopify	see CMS table above

JavaScript frameworks and UI libraries

Technology	Signal
React	react.js / react.min.js, react-dom scripts; __REACT_, data-reactroot, data-reactid markup
Vue.js	vue.js / vue.min.js, vue-router scripts; data-v- attributes, v-bind, v-model
Angular	angular.js, @angular/core; ng-version, ng-app markup
Next.js	__NEXT_DATA__, _next/static; x-powered-by: Next.js header
Nuxt.js	__NUXT__, _nuxt/ paths; data-n-head markup
Svelte	svelte scripts; s- scoped class names
jQuery	jquery.min.js, versioned jquery-x.y scripts
Bootstrap	bootstrap.min.js, bootstrap.bundle; container/row/col- classes
Tailwind CSS	utility class patterns such as flex, grid, text-*-500, bg-*-500, p-4

Analytics, marketing and customer messaging

Technology	Signal
Google Analytics	google-analytics.com/analytics.js, gtag; UA- and G- property IDs
Google Tag Manager	googletagmanager.com/gtm.js; GTM- container IDs
Hotjar	static.hotjar.com; hjBootstrap markup
Mixpanel	cdn.mxpnl.com; mixpanel.init
Segment	cdn.segment.com; analytics.segment
HubSpot	js.hs-scripts.com, js.hubspot.com; hs-beacon markup
Intercom	widget.intercom.io, js.intercomcdn.com; x-intercom-version header
Drift	js.drift.com, driftt.com

CDN and hosting

Technology	Signal
Cloudflare	cf-ray header; server: cloudflare
AWS CloudFront	x-amz-cf-id header; via: CloudFront
Fastly	x-fastly-request-id header; via: varnish
Vercel	x-vercel-id header; server: Vercel
Netlify	x-nf-request-id header; server: Netlify

Backend and server stack

Technology	Signal
Node.js	x-powered-by: Express or Node.js header
PHP	x-powered-by: PHP header
Ruby on Rails	x-powered-by: Phusion Passenger, server: Passenger
ASP.NET	__VIEWSTATE, aspnetForm markup; x-powered-by: ASP.NET, x-aspnet-version headers

Payment providers

Technology	Signal
Stripe	js.stripe.com, stripe.js
PayPal	paypal.com/sdk, paypalobjects.com

A technology that is not in these tables is not reported. If you need a name that is missing, ask in the Actor's Issues tab.

How it compares to other tech-stack detectors

Facts below were read from the Apify Store on 3 September 2026 and from each product's own listing; prices are the Free-plan figures shown there and can change.

	This Actor	misterkhan/website-tech-stack-scanner	pulsedata/website-tech-stack-detector	BuiltWith / Wappalyzer
Coverage	39 named technologies, each with a documented signal (tables above)	7,000+ technologies (listing)	7,500+ technologies with versions and confidence (listing)	Large commercial databases
Page rendering	Headless Chrome (Playwright) — JavaScript executed before matching	Not stated on listing	Not stated on listing	Own crawlers
Input	urls array, up to 50 per run	startUrls array, up to 100 per run	urls array	Web UI / API by subscription
Price per site	$0.05 flat on every Apify plan	$0.10 on the Free plan, $0.07 on higher plans	$0.002	Subscription products
Output	technologies list, techCount, serverInfo, responseStatus per URL	Per listing	Per listing	Per product

Pick this Actor when you want a short, explainable list of well-known platforms per site at a fixed price. Pick a large-catalogue detector when you need long-tail or version-level identification.

Input

{
  "urls": [
    "https://example.com",
    "https://vercel.com",
    "https://github.com"
  ],
  "timeout": 30000
}

Input Parameters

• urls (array, required) — List of website URLs to analyze. Maximum 50 URLs per run. Each URL should start with http:// or https://.
• timeout (integer, optional) — Maximum time to wait for each page to load in milliseconds. Default: 30000 (30 seconds).

Output

{
  "url": "https://vercel.com",
  "technologies": ["React", "Next.js", "Vercel", "Google Analytics"],
  "techCount": 4,
  "serverInfo": "Vercel",
  "responseStatus": 200,
  "disclaimer": "This tool detects website technologies using publicly observable signals..."
}

Output Fields

• url — The analyzed website URL
• technologies — Array of detected technology names
• techCount — Total number of detected technologies
• serverInfo — HTTP server header or x-powered-by value
• responseStatus — HTTP response status code
• error (conditional) — Error message if page failed to load
• disclaimer — Legal disclaimer about detection limitations

Pricing

Free plan: each run returns up to 25 results (the first 3 inputs). Paid Apify plans receive the full result set.

• Model — Pay-Per-Event
• Cost — $0.05 USD per website analyzed
• Billing — Only charged for successful page loads

Example Usage

Basic Usage

{
  "urls": ["https://example.com"]
}

Multiple URLs

{
  "urls": [
    "https://github.com",
    "https://vercel.com",
    "https://notion.so",
    "https://figma.com"
  ]
}

With Custom Timeout

{
  "urls": ["https://slowsite.example.com"],
  "timeout": 60000
}

How It Works

1. Page Fetch — Uses Playwright Chrome to fetch each URL with full JavaScript rendering
2. Content Analysis — Extracts HTML content and HTTP response headers
3. Pattern Matching — Compares against 39 technology fingerprints:
   • Script source URLs and names
   • HTML element patterns and class names
   • Meta tag contents
   • HTTP header values
4. Result Compilation — Returns detected technologies, server info, and metadata

Detection Limitations

• JavaScript Dependencies — Some technologies may be obfuscated, lazy-loaded, or server-side only
• False Positives/Negatives — Detection is based on observable signals and may be incomplete
• Dynamic Content — Technologies loaded after page render may not be detected
• Custom Implementations — Custom or white-label solutions won't be detected

Legal Disclaimer

This tool detects website technologies using publicly observable signals (HTTP headers, HTML source, JavaScript patterns). Detection results are best-effort estimates and may be incomplete or inaccurate. Some technologies may be obfuscated or server-side only.

Results are for informational and research purposes only. Do not use for:

• Unauthorized security testing
• Competitive espionage
• Targeting websites without consent
• Any illegal or unethical purposes

The operator makes no warranty regarding the completeness or accuracy of technology detection results. Use at your own risk and in compliance with all applicable laws and the target website's terms of service.

License

This Actor uses Crawlee under Apache License 2.0. See Crawlee documentation for more details.

Support

For issues, feature requests, or questions, contact the Actor author or visit the Apify documentation.

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