wappalyzer-alternative

Detect every technology behind any website — frameworks, CMS, analytics, CDNs, and more. CLI tool powered by the Technology Detection API.

Free, open source website technology detection. Identify any site's full tech stack from its URL — CLI, library and MCP server for Claude, Claude Code, Codex and ChatGPT. No API key, no credits, no subscription.

Wappalyzer Python library to detect website technologies — identify CMS, WordPress, Shopify, JavaScript frameworks like React & Next.js, analytics, payment processors, web servers, CDNs & 1,400+ tech stack fingerprints with versions. Free, open source website technology detector for Python 3.

See what websites are built with — open-source, evidence-based tech detection. Chrome extension runs 100% locally.

Detect the technologies behind a URL and pull their CVEs from NVD

Free API to detect technologies, frameworks, and tools used by any website. 203 technology signatures across 21 categories.

Server-side CMS fingerprinting for Node.js. Detects 41 systems across 15 independent channels - zero dependencies.

Remote MCP server for querying website technology stacks. Configure Claude Desktop / Cursor to query 887k+ sites.

TechDetect - Open-source async web technology detection engine. Identifies 7,400+ technologies including CMS, frameworks, JS libraries, CDNs, and analytics tools. Python-based Wappalyzer alternative for cybersecurity professionals.

100% free & open-source web technology lookup and lead intelligence platform. Scan single URLs or bulk domains to detect tech stacks, export lead data, and access a free public REST API. Built with Next.js 16, TypeScript, and Tailwind CSS.

Website analyzer API: detect tech stack (WordPress/Wix/Shopify), SEO issues, AI-crawler visibility (GPTBot/ClaudeBot), real transfer size and keyword targeting. Free tier, no signup. Polish-first. | Prześwietlarka stron — API

MCP server that fingerprints site-builder and booking platforms behind a URL. Deterministic, weighted-evidence detection.

Runnable Python examples: find Shopify+Klaviyo stores (Wappalyzer/BuiltWith alternative), Polymarket odds to CSV, Airbnb city data, remote jobs feed

Browser extension (Chrome MV3) that detects the technologies a website is built with: CMS, frameworks, analytics, CDNs, servers, fonts and more. Free, multilingual, open-source alternative to Wappalyzer.