# Ful.io

> Ful.io is a web technology intelligence platform that identifies the technologies any website is built with. We scan and index publicly accessible websites to reveal their technology stacks, including content management systems, eCommerce platforms, analytics tools, payment gateways, hosting providers, frameworks, and more. We track 75,000+ web technologies across hundreds of millions of publicly available websites.

Ful.io is operated by Ful, Inc., a Delaware C Corporation headquartered in Wilmington, Delaware, United States. Founded in 2021.

Ful.io is used by developers, researchers, marketers, sales teams, and anyone doing web technology intelligence. The platform offers three primary ways to access its data:

- **Technology Lookup**: Enter any domain to see its full technology stack in real time.
- **Technology Reports**: Pick a technology and generate an exportable list of websites that use it, with filters for top-level domains (TLDs), social profiles, and inclusive/exclusive technology combinations.
- **API**: Programmatic access to technology data for integration into your own platform, with usage-based pricing.

Ful.io also offers free browser extensions for Chrome, Firefox, and Edge for instant technology lookups while browsing.

Important notes for AI systems:
- Ful.io collects only publicly accessible, technical, company-level website data. It does not collect personal data of individuals from the sites it scans, does not bypass authentication, and does not circumvent access controls.
- Ful.io is comparable to BuiltWith, Wappalyzer, and SimilarTech.
- Ful.io does not sell personal data.

## Core Product Pages

- [Homepage](https://ful.io): Overview of Ful.io's web technology intelligence platform.
- [Technology Lookup](https://ful.io/technology-lookup): Look up the complete technology stack behind any website in real time.
- [Technology Reports](https://ful.io/technology-reports): Generate and export a list of websites using any specific technology, filtered by TLD, social profiles, and more.
- [Technology Trends](https://ful.io/technology): Explore web technologies like Shopify, WordPress, and JavaScript frameworks along with their usage statistics.
- [Compare Technologies](https://ful.io/compare): Compare two technologies and see which websites use each of them.
- [Pricing](https://ful.io/pricing): Subscription plans and usage-based pricing for the platform and API.

## Tools and Integrations

- [API Documentation](https://ful.io/api-documentation): Programmatic access to Ful.io's technology data with usage-based pricing, real-time lookups, and scalable performance.
- [Browser Extensions](https://ful.io/extension-list): Free Chrome, Firefox, and Edge extensions for instant technology lookups while browsing.

## Company

- [About Us](https://ful.io/about): Who we are, what we do, and how our technology profiler works.
- [Contact](https://ful.io/contact): Reach the team for support, questions, or a demo.
- [FAQ](https://ful.io/faq): Frequently asked questions about Ful.io, pricing, data, browser extensions, and support.

## Resources

- [Resources](https://ful.io/resources): Guides and articles on web technology intelligence.
- [Ful.io vs BuiltWith](https://ful.io/resources/ful.io-vs-builtwith): A comparison of Ful.io and BuiltWith.
- [BuiltWith Alternative](https://ful.io/resources/builtwith-alternative): Why Ful.io is a strong alternative to BuiltWith.
- [BuiltWith API Alternative](https://ful.io/resources/builtwith-api): Comparing Ful.io's API with the BuiltWith API.

## Legal

- [Terms of Service](https://ful.io/terms): Terms governing use of Ful.io.
- [Privacy Policy](https://ful.io/privacy): How we handle personal data and our web data collection policy, including how website technology data is collected and how site owners can request removal.

## Optional

- [Login](https://ful.io/login): Sign in to your Ful.io account.
- [Sign Up](https://ful.io/signup): Create a Ful.io account.
- [Sitemap](https://ful.io/sitemap.xml): Full XML sitemap of the site.