Tech Stack Detector Pro - BuiltWith Alternative

Detect 440+ technologies across 54 categories on any website for $0.005/URL. BuiltWith starts at $295/month. You do the math.

Identify CMS platforms, JavaScript frameworks, analytics tools, hosting providers, CDN services, security solutions, payment processors, marketing tools, and much more -- all from a single HTTP request per URL. No browser needed. No proxy required.

Why This Actor?

Feature	This Actor	BuiltWith	Wappalyzer
Price	$5/1,000 URLs	$295-995/mo	$250-850+/mo
Technologies	440+ (the ones that matter for sales and audits)	126,000+	not published
Proxy needed	No	N/A	N/A
Browser needed	No	N/A	Extension
Bulk scanning	10,000 URLs/run	Limited	Limited
API access	Yes (Apify API)	Extra cost	Extra cost
Pay-per-use	Yes	Monthly sub	Monthly sub

Technology Categories Detected

• CMS: WordPress, Drupal, Joomla, Ghost, Squarespace, Webflow, Wix, Contentful, Prismic, Sanity, Strapi, and 20+ more
• JavaScript Frameworks: React, Angular, Vue.js, Next.js, Nuxt.js, Svelte, Gatsby, Remix, Astro, Alpine.js, HTMX, Solid.js, Qwik, and 20+ more
• JavaScript Libraries: jQuery, Lodash, D3.js, Chart.js, Three.js, GSAP, Socket.io, and 40+ more
• CSS Frameworks: Bootstrap, Tailwind CSS, Bulma, Materialize, Foundation, Ant Design, Chakra UI, and 15+ more
• E-commerce: Shopify, WooCommerce, Magento, BigCommerce, PrestaShop, Snipcart, Paddle, Lemon Squeezy, and more
• Analytics: Google Analytics (GA4/Universal), Facebook Pixel, TikTok Pixel, Hotjar, Segment, Amplitude, Mixpanel, PostHog, Plausible, Microsoft Clarity, and 25+ more
• Marketing: HubSpot, Marketo, Mailchimp, Klaviyo, ActiveCampaign, ConvertKit, Brevo, and 15+ more
• Chat/Support: Intercom, Drift, Crisp, Zendesk, Tawk.to, LiveChat, Freshdesk, Help Scout, and more
• Payments: Stripe, PayPal, Razorpay, Braintree, Square, Klarna, Afterpay, Adyen, and more
• Hosting: Vercel, Netlify, Heroku, AWS, Azure, Google Cloud, Cloudflare Pages, Railway, Fly.io, and more
• CDN: Cloudflare, AWS CloudFront, Fastly, Akamai, BunnyCDN, jsDelivr, and more
• Security: Cloudflare WAF, DataDome, PerimeterX, Imperva, hCaptcha, reCAPTCHA, and more
• Web Servers: Nginx, Apache, LiteSpeed, IIS, Caddy, and more
• A/B Testing: Optimizely, VWO, AB Tasty, LaunchDarkly, Split, and more
• Cookie Consent: Cookiebot, OneTrust, Iubenda, Osano, TrustArc, and more
• Error Tracking: Sentry, Bugsnag, Rollbar, LogRocket, and more
• SEO: Schema.org, Yoast SEO, Rank Math, Hreflang Tags
• Ads: Google AdSense, Google Ads, Taboola, Outbrain, Criteo, and more
• Fonts: Google Fonts, Adobe Fonts, Bunny Fonts
• Video: YouTube, Vimeo, Wistia, JW Player, Brightcove
• Forms: Typeform, JotForm, Tally, Formspree
• Search: Algolia, Elasticsearch, Typesense, Meilisearch
• Authentication: Auth0, Clerk, Okta, Firebase Auth
• Reviews: Trustpilot, Yotpo, Judge.me, Bazaarvoice
• Static Site Generators: Hugo, Jekyll, Eleventy, Docusaurus, and more

Use Cases

• B2B Sales Prospecting: Find companies using specific technologies (e.g., all Shopify stores using Stripe + Klaviyo)
• Competitive Tech Analysis: See what your competitors are running under the hood
• SEO Audits: Check analytics setup, tag managers, schema markup, and performance tools
• VC Due Diligence: Understand a startup's tech maturity and infrastructure choices
• Web Dev Agency Prospecting: Find WordPress sites without proper analytics for outreach
• Market Research: Map technology adoption across industries

Input

{
    "urls": [
        "https://shopify.com",
        "https://stripe.com",
        "https://vercel.com"
    ],
    "maxUrls": 100,
    "includeHeaders": false,
    "includeEvidence": true,
    "timeout": 30,
    "followRedirects": true
}

Parameter	Type	Default	Description
urls	array	required	List of URLs to scan
maxUrls	integer	100	Max URLs to process (up to 10,000)
includeHeaders	boolean	false	Include raw HTTP headers in output
includeEvidence	boolean	true	Show what pattern triggered each detection
timeout	integer	30	Request timeout per URL in seconds
followRedirects	boolean	true	Follow HTTP redirects

Output

Each URL produces a result object:

{
    "url": "https://shopify.com",
    "finalUrl": "https://www.shopify.com",
    "statusCode": 200,
    "technologies": [
        {
            "name": "Cloudflare",
            "category": "CDN",
            "confidence": 100,
            "version": null,
            "detectedBy": "headers:Server=cloudflare"
        },
        {
            "name": "React",
            "category": "JavaScript Framework",
            "confidence": 90,
            "version": "18.2",
            "detectedBy": "html:react.production"
        },
        {
            "name": "Next.js",
            "category": "JavaScript Framework",
            "confidence": 100,
            "version": null,
            "detectedBy": "html:__NEXT_DATA__"
        },
        {
            "name": "Google Analytics",
            "category": "Analytics",
            "confidence": 90,
            "version": "GA4",
            "detectedBy": "html:gtag("
        }
    ],
    "summary": {
        "totalTechnologies": 12,
        "categories": ["Analytics", "CDN", "JavaScript Framework"],
        "hosting": "Cloudflare",
        "cms": null,
        "ecommerce": "Shopify",
        "jsFramework": "React, Next.js",
        "analytics": ["Google Analytics", "Segment"],
        "security": ["Cloudflare WAF"]
    },
    "responseTimeMs": 1200,
    "scrapedAt": "2026-04-09T15:00:00+00:00"
}

How Detection Works

The actor uses 4 detection layers for maximum coverage:

1. HTTP Response Headers -- Server headers, X-Powered-By, platform-specific headers (X-Shopify-Stage, X-Drupal-Cache, CF-RAY, etc.)
2. HTML Content Analysis -- Pattern matching on HTML source for framework signatures, script URLs, CSS references, and unique DOM attributes
3. Cookie Analysis -- Cookie names reveal analytics tools, CMS platforms, and security solutions
4. Version Extraction -- Regex patterns extract version numbers from script URLs, meta tags, and inline code

Each detection includes a confidence score (80-100%) based on signal strength.

Pricing

This actor uses pay-per-event pricing:

• $0.005 per URL scanned (only charged for successful scans)
• No monthly subscription
• 1,000 URLs = $5
• 10,000 URLs = $50

Performance

• Speed: ~1-3 seconds per URL (HTTP-only, no browser overhead)
• Memory: 256MB RAM (lightweight HTTP requests)
• Concurrency: 5 parallel requests with 0.5s delay
• No proxy needed: Direct HTTP requests to public websites

FAQ

Does this need a proxy? No. The actor sends standard HTTP requests directly to public websites.

Does this need a browser? No. This is HTTP-only analysis, which makes it faster and cheaper than browser-based alternatives. The tradeoff is that some client-side-only technologies may not be detected.

How accurate is it? High confidence (100%) for server-side signals like HTTP headers, cookies, and meta tags. Moderate confidence (80-90%) for HTML pattern matching. Version detection works when the version is included in URLs or meta tags.

Can I scan 10,000 URLs? Yes. Set maxUrls to 10000. The actor processes URLs concurrently with rate limiting to avoid overwhelming target servers.

What about JavaScript-only frameworks? Some frameworks that only render client-side (like SPAs that load everything via JS) may show fewer detections. For maximum coverage of client-side tech, consider pairing this with a browser-based detector.

Does it detect programming languages? It detects languages and frameworks when they expose signals (PHP via PHPSESSID cookie, ASP.NET via session cookie, Java via JSESSIONID, etc.).

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Legal

This actor only sends standard HTTP requests to publicly accessible websites. It does not bypass any authentication, access restricted content, or violate robots.txt. The technology detection is based solely on publicly visible response headers, HTML source, and cookies -- the same information available in any web browser's developer tools.