Tech Stack Detector: Website Technology Lookup & Wappalyzer

Tech stack detector and website technology lookup for any domain: CMS, e-commerce platform, analytics and marketing tools, JavaScript frameworks, CDN, web servers, payment providers and 7,000+ other technologies. Paste a list of domains, get versions and categories for each one in a clean table or JSON. It costs $3 per 1,000 websites, and websites that fail to load are free.

BuiltWith / Wappalyzer alternative

Uses the same open-source webappanalyzer fingerprint database as Wappalyzer (7,628 technologies across 90+ categories, with version numbers where the site exposes them), at a fraction of the price of BuiltWith or a Wappalyzer subscription, with no monthly commitment. Websites that fail to load are never billed.

Use cases

• Find every Shopify / WordPress / HubSpot site in a list: paste your domain list and filter the output by technologies[].name.
• Lead qualification: find every prospect running Shopify, WordPress, HubSpot or a competitor's product.
• Sales prospecting lists: segment thousands of domains by the technology they use.
• Competitor research: see what your competitors' sites run on and which versions they use.
• Market share analysis: measure how widely a technology is adopted across a list of sites.
• Tech and security audits: spot outdated CMS or library versions across a portfolio of sites.

Input

{
  "urls": ["wordpress.org", "shopify.com", "https://apify.com"],
  "maxConcurrency": 10,
  "timeoutSecs": 20
}

Domains without https:// are fine.

Output

One item per website:

{
  "url": "wordpress.org",
  "finalUrl": "https://wordpress.org/",
  "statusCode": 200,
  "technologies": [
    { "name": "WordPress", "version": "6.7", "categories": ["CMS", "Blogs"], "confidence": 100, "website": "https://wordpress.org" },
    { "name": "PHP", "version": null, "categories": ["Programming languages"], "confidence": 100, "website": "http://php.net" },
    { "name": "jQuery", "version": "3.7.1", "categories": ["JavaScript libraries"], "confidence": 100, "website": "https://jquery.com" }
  ],
  "categories": ["Blogs", "CMS", "JavaScript libraries", "Programming languages"],
  "error": null
}

Export it as JSON, CSV or Excel, or read it through the Apify API.

Pricing

You pay $0.003 per website analyzed ($3 per 1,000). Websites that time out, block the request or don't exist are returned with an error field and are not charged.

FAQ

Does it render JavaScript? No. It fetches the page over HTTP and matches headers, cookies, HTML, meta tags and script URLs, with no browser involved. This keeps it fast and cheap, but technologies that only appear after JavaScript executes (client-side-rendered widgets, for example) can be missed.

What are the limits? Up to maxConcurrency websites in parallel (default 10, max 50) and timeoutSecs per website (default 20s); the HTML matched is capped at 512 KB per page.

Can I use it from my code, Make, Zapier or an AI agent? Yes. Call it through the Apify API, the Make and Zapier integrations, or the Apify MCP server for AI agents.

Does it collect personal data? No. It only reads public technical signals from websites.

Do I need an API key? No.

License

GPL-3.0. Fingerprints come from webappanalyzer (GPL-3.0).