🔬 Tech Stack Detector
Enter any domain to detect its technology stack. Identifies CMS platforms, web frameworks, CDNs, analytics tools, server software, and JavaScript libraries from HTTP headers, DNS records, Shodan data, and page analysis.
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What Is Tech Stack Detection?
Tech stack detection identifies the software technologies powering a website — web server, programming language, CMS, CDN, analytics, and third-party services. This intelligence is valuable for competitive analysis, security research, sales prospecting, and OSINT investigations.
Detection Methods
- HTTP Response Headers
- Headers like Server, X-Powered-By, X-Generator, and Link reveal server software, frameworks, and CMS platforms. Cookie names and header patterns provide additional fingerprinting signals.
- DNS Records
- CNAME records reveal CDN providers (Cloudflare, Fastly, Akamai). MX records identify email providers. TXT records may contain verification tokens for third-party services.
- Shodan CPE Data
- Shodan InternetDB provides Common Platform Enumeration identifiers for services on open ports, giving precise version information for web servers and application frameworks.
- Page Link Analysis
- URLs in page links reveal technology-specific paths: /wp-content/ for WordPress, analytics scripts, CDN URLs, and third-party widget providers.
🔬 Tech Stack Detector — Frequently Asked Questions
How do I find out what technology a website uses?
Enter a URL and the tool fingerprints the site’s frameworks, CMS, analytics, CDNs, and server software from its responses — a free alternative to paid tech-lookup services.
How does the Tech Stack Detector identify technologies?
The tool combines four data sources: HTTP response headers (Server, X-Powered-By, X-Generator), DNS records (CNAME patterns for CDNs), Shodan InternetDB CPE data, and page link analysis. Each source reveals different layers of the technology stack.
Is this a free alternative to BuiltWith and Wappalyzer?
Yes. This tool detects server software, CMS platforms, CDNs, analytics tools, and frameworks using public APIs and passive intelligence, without any browser extension or active crawling.