Website Tech Stack Detector (Wappalyzer Alternative) – Bulk

Detect the technologies behind any list of websites: CMS, ecommerce platform, JS frameworks, analytics, ad pixels, chat, payments, CDN and hosting. 90+ signatures, fast bulk HTTP (no browser), clean per-category output for lead lists.

Why this actor

• No-browser HTTP engine = cheap and fast at 10k+ domains; byCategory output drops straight into CRM filters; no start fee.
• Pay only for results: $2.00 per 1,000 website analyzeds, no start fee, failed lookups are free.
• Robust: automatic retries with exponential backoff, respects Retry-After, per-item error rows instead of crashed runs.
• Clean, flat JSON/CSV/Excel output ready for Google Sheets, Make, Zapier, n8n, Clay, or the Apify API.

Use cases

• Build lead lists of Shopify / WooCommerce / HubSpot users
• Agency prospecting: find sites without analytics or on outdated stacks
• Competitive research on marketing tooling
• Enrich CRM accounts with technographics

How to use Website Tech Stack Detector

1. Enter a list of domains or URLs (e.g. vercel.com, allbirds.com).
2. Click Start. Sites are fetched in parallel over plain HTTP, no browser.
3. Export one row per site with technologies grouped by category, or filter in Sheets to build lead lists (e.g. all Shopify stores using Klaviyo).

Input

Field	Type	Description
urls	array	Domains or URLs to analyze (e.g. shopify.com, https://vercel.com). Thousands per run are fine.
concurrency	integer	Parallel requests.
maxItems	integer	0 = no limit.

Example input:

{
  "urls": [
    "vercel.com",
    "allbirds.com",
    "wordpress.org"
  ]
}

Output

Each dataset item looks like this (real sample from a test run, long fields trimmed):

{
  "inputUrl": "https://wordpress.org",
  "finalUrl": "https://wordpress.org/",
  "domain": "wordpress.org",
  "statusCode": 200,
  "title": "Blog Tool, Publishing Platform, and CMS – WordPress.org",
  "generator": "WordPress 7.2-alpha-64337",
  "technologies": [
    {
      "name": "WordPress",
      "category": "CMS"
    },
    {
      "name": "WooCommerce",
      "category": "Ecommerce"
    },
    {
      "name": "Google Tag Manager",
      "category": "Tag manager"
    },
    "\u2026"
  ],
  "technologyNames": [
    "WordPress",
    "WooCommerce",
    "Google Tag Manager",
    "\u2026"
  ],
  "byCategory": {
    "CMS": [
      "WordPress"
    ],
    "Ecommerce": [
      "WooCommerce"
    ],
    "Tag manager": [
      "Google Tag Manager"
    ],
    "Web server": [
      "Nginx"
    ],
    "Fonts": [
      "Google Fonts"
    ]
  },
  "technologyCount": 5,
  "server": "nginx",
  "scrapedAt": "2026-10-14T05:54:48+00:00"
}

Rows that could not be processed contain an error field and are not charged.

Comparison: Website Tech Stack Detector vs alternatives

	This actor	Typical alternatives
Cost for 10,000 sites	~$20, pay per site	BuiltWith Pro from $295/month
Bulk input	Thousands of URLs per run	Browser extension: one site at a time
Output	Flat JSON/CSV by category	Mostly UI or paid API
Account / API key	Not needed	Required

Pricing

Pay-per-event: $0.002 per website analyzed (= $2.00 / 1,000). Use Max results to cap spend. Apify's free plan credit covers thousands of results per month.

Integrations & API

Run on a schedule in Apify Console, call via the Apify API / Python & JS clients, or connect to Make, Zapier, n8n, Google Sheets, Slack and webhooks. Works as a tool for AI agents via Apify MCP.

Use with AI agents (MCP)

Website Tech Stack Detector is a ready-made tool for AI agents (BuiltWith and Wappalyzer alternative technology lookup). Connect it to Claude, ChatGPT, Cursor, VS Code or any MCP client with the Apify MCP server:

https://mcp.apify.com/?tools=shawndunn/website-tech-stack-detector

Agents can also call it directly via the Apify API (POST https://api.apify.com/v2/acts/shawndunn~website-tech-stack-detector/run-sync-get-dataset-items) and pay per result, with no subscription.

FAQ

Is it legal? The actor only reads publicly available data from public endpoints, without logins, and does not bypass paywalls or access controls. You are responsible for using the data in line with applicable laws (e.g. GDPR) and the source sites' terms.

Something broke? Open an issue in the Issues tab; we typically respond within 24 hours and ship fixes fast.

Is this a free BuiltWith alternative? It is pay-per-result: $0.002 per website, and Apify's free monthly credit covers a few thousand sites.

Can I find all Shopify or WordPress sites in my list? Yes. Run your domain list, then filter byCategory (e.g. Ecommerce or CMS) or technologyNames.

Why might a technology be missed? Detection uses HTML, headers, cookies and script signatures without running JavaScript, so tools loaded only after user interaction can be missed.

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