Pricing
$2.50 / 1,000 results
Company Tech Stack Detector
DeprecatedDetect technologies used by websites including CMS, analytics, marketing tools, CDN, and hosting providers. Alternative to BuiltWith for competitive intelligence and sales prospecting.
Pricing
$2.50 / 1,000 results
Rating
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Monthly active users
2 months ago
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Identify what technologies any website runs. Analyzes HTTP headers, HTML source, and script patterns to detect CMS, analytics, marketing tools, CDNs, and more. Works as a BuiltWith alternative with no API key required.
Features
- Detect CMS: WordPress, Drupal, Joomla, Shopify, Webflow, Squarespace
- Identify analytics: Google Analytics, Mixpanel, Amplitude, Hotjar, Matomo
- Find tag managers: Google Tag Manager, Segment, Adobe Launch
- Detect ecommerce: Shopify, WooCommerce, Magento, BigCommerce
- Identify CDN: Cloudflare, Fastly, CloudFront, Varnish, Akamai
- Find marketing tools: HubSpot, Mailchimp, Klaviyo, ActiveCampaign
- Detect chat/support: Intercom, Drift, Zendesk, Crisp
- Find payment processors: Stripe, PayPal, Braintree
- Deep mode: also checks robots.txt and sitemap.xml for extra signals
- 40+ technology signatures total
Use Cases
- Competitive intelligence: see what stack competitors run before a pitch
- Sales prospecting: filter leads by technology — "everyone on Shopify using Klaviyo"
- Market research: track adoption rates of platforms across an industry
- Agency audits: hand prospects a full tech breakdown of their current site
- Partnership targeting: find sites running complementary tools for integration sales
Input
| Field | Type | Required | Description | Default |
|---|---|---|---|---|
| urls | array of strings | Yes | Domains or full URLs to analyze | — |
| deep | boolean | No | Also inspect robots.txt and sitemap.xml | false |
Example input:
{ "urls": ["example.com", "https://store.example.com"], "deep": true }
Output
One result per URL:
{ "url": "example.com", "technologies": [ {"name": "WordPress", "category": "CMS", "confidence": 0.95}, {"name": "Google Tag Manager", "category": "Tag Manager", "confidence": 1.0}, {"name": "Cloudflare", "category": "CDN", "confidence": 1.0}, {"name": "HubSpot", "category": "Marketing", "confidence": 0.85}, {"name": "Stripe", "category": "Payment", "confidence": 0.9} ], "server": "nginx/1.21.0", "headers_summary": { "server": "nginx/1.21.0", "x-powered-by": "PHP/8.1", "cf-ray": "present", "x-cache": "not present" } }
| Field | Type | Description |
|---|---|---|
| url | string | The URL that was analyzed |
| technologies | array | Detected tech: name (string), category (string), confidence (float 0-1) |
| server | string | Server header value |
| headers_summary | object | Key HTTP headers and whether they are present |
Pricing
$2.50 per 1,000 results ($0.0025 per result).
How It Works
Sends an HTTP GET request, then scans the HTML source for known script URLs, meta tags, and fingerprint strings. Matches against a 40+ signature database covering major SaaS tools. Also parses HTTP response headers for server identification. Deep mode fetches /robots.txt and /sitemap.xml for additional clues.
FAQ
How accurate is it? Pattern-matching catches well-known tools at roughly 85% accuracy. Custom or heavily minified sites may return fewer detections. Confidence scores help you filter noise.
What if a site blocks the request? The actor returns whatever it can extract from partial headers. Cloudflare-protected sites sometimes yield only the CDN detection.
Do I need authentication? No. All detection is passive — reads public HTML and headers. No API keys or login required.
Does deep mode slow things down? Slightly. It makes 2-3 extra requests per URL (robots.txt, sitemap.xml). Adds about 1 second per site.
Limits
- Timeout: 15 seconds per URL
- Works on publicly accessible sites only (no login walls or paywalls)
- JavaScript-rendered tech (loaded after page load) may be missed
- Confidence scores below 0.5 are filtered from results
