BuiltWith is a website technology lookup tool that reveals the full tech stack, including frameworks, analytics, CMS, hosting, and more, used by any given website.

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🚀 Overview

BuiltWith is a comprehensive web technology profiler that scans and catalogs the technologies powering millions of websites worldwide. It provides detailed reports on everything from frontend frameworks and backend servers to analytics tools and eCommerce platforms.

This project solves the challenge of discovering hidden technology usage across the internet, enabling users to perform competitive analysis, generate targeted leads, and track market trends in web development and digital tools. It's built for sales and marketing teams, business intelligence analysts, investors, researchers (like those at Harvard, MIT, and hedge funds), and developers seeking insights into competitor stacks or prospect tech.

BuiltWith was created by BuiltWith Pty Ltd to deliver actionable intelligence from web data, with trends dating back to 1985 and weekly updates.

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✨ Key Features

• Technology Lookup: Enter any URL to see detailed tech profile including analytics, widgets, frameworks, servers, CDN, and security.
• Lead Generation: Build exportable lists of websites using specific technologies, filtered by location, traffic, vertical, revenue, etc.
• Market Share & Trends: Analyze adoption rates, historical data, and country-specific stats for 113,000+ technologies.
• eCommerce Intelligence: Tracks 2,500+ technologies and 2 billion products across 26 million sites.
• API Access: Integrate lookups and data into custom apps (paid plans).

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🛠 Tech Stack

BuiltWith's own tech stack is not fully publicly disclosed, but it relies on:

• Frontend: JavaScript, HTML5, CSS3
• Backend: Proprietary web crawling and fingerprinting engine
• Database: Large-scale custom database handling 673M+ sites
• Hosting: Cloud infrastructure (likely AWS or similar)
• Auth: Custom login system

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👥 Who Is This For?

This project is useful for:

• Sales teams who want to prospect companies using specific tech stacks
• Marketers looking for competitive intelligence and trend insights
• Investors and researchers tracking technology adoption
• Developers curious about what powers competitor sites

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📸 Screenshots / Demo

• Live demo: https://builtwith.com
• GitHub: https://github.com/builtwith

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🔥 Project Status

• 🟢 Actively building

Last updated: 2026-03-24

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❓ FAQ

Is this project free?

Freemium — Free forever for individual site lookups. Paid SaaS plans: Basic ($295/mo), Pro ($495/mo), Team ($995/mo), with annual discounts and API credits. (Plans cancel anytime; see https://builtwith.com/plans)

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Is the source code available?

No — Proprietary commercial SaaS. API code examples available at https://github.com/builtwith/builtwith-code-examples

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Can I contribute?

Submit feedback, feature requests, or bug reports via https://builtwith.com/contact or Knowledge Base. Contribute to public code examples repo via GitHub issues/PRs.

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📬 Contact & Links

• Website: https://builtwith.com
• GitHub: https://github.com/builtwith
• Twitter/X: https://x.com/builtwith
• LinkedIn: https://au.linkedin.com/company/builtwith
• Email: Via contact form at https://builtwith.com/contact

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