About Ful.io

We make the web’s technology visible.

Since 2021, Ful.io has helped developers, marketers, researchers, and sales teams stop guessing and start understanding the technology behind any website.

2021
Founded
100M+
Websites profiled
75,000+
Technologies tracked
277+
Categories
190+
Countries covered
Our story

Beyond basic data, into real technographic intelligence

Ful.io is trusted by teams who want to go beyond basic data. Our engine scans and tracks hundreds of millions of publicly available websites, revealing key technographic signals across every major and niche stack: eCommerce, CRMs, analytics, hosting, content management, payment gateways and many more.

If you want to find the websites using a specific tool or technology, our Technology Reports platform is built exactly for that. It’s simple to use, with full control over your filters. Alongside it, bulk lookup lets you upload a list of websites and get complete technographic details for each, and our API & MCP pipe the same data straight into your own platform.

We’re constantly improving the accuracy and depth of our technology signals and expanding the number of websites we track, so you keep getting richer insights to grow your business.

What we build

One dataset, many ways to use it

Every product is powered by the same live web-technology intelligence. You choose how to put it to work.

Technology Reports

Every company using a technology, filtered by country, TLD, vertical and socials.

Technology Lookup

The full stack of any website: CMS, frameworks, analytics, payments and hosting.

Bulk Lookup

Upload a list of websites and get complete technographic details for every one.

API & MCP

Pipe the same data into your own product, or connect an AI agent over MCP.

Browser Extensions

Identify any site’s stack right from your toolbar on Chrome, Firefox and Edge.

CRM Enrichment

Push technographics into HubSpot to enrich records and prioritise the right accounts.

How we work

A few things we care about

01

Accuracy first

We obsess over signal quality, constantly improving the depth and precision of what we detect.

02

Built for research

Powerful filters and clean, structured data that reward the curious and reveal what others miss.

03

Lean and fast

A small, focused team that ships quickly, listens closely, and keeps making the product better.

The team

Built by a small team in Delaware

Ujjwal Singh Baghel
Ujjwal Singh Baghel
Founder, Ful.io

“Ful.io is built to give businesses a competitive edge through deep technographic intelligence. Whether you want to identify the technologies behind any website or build targeted technology reports, we help you research smarter and target faster.”

Headquarters

Ful, Inc.
1207 Delaware Ave, Suite #348
Wilmington, DE 19806
United States
Loved by teams

Trusted by businesses worldwide

★★★★★

Ful.io has been a game-changer for our market research. Instantly analyzing what technologies our competitors use has helped us make informed decisions about our own stack.

Todd Dunsmore · Doja Marketing
★★★★★

Before, our R&D team tried BuiltWith, then built our own. With Ful.io, we save both time and money, and it changed how we look at traffic and identify prospects.

Robert Kaene · The Wednesday Club
★★★★★

Any ecommerce platform not using Ful.io is seriously missing out. Technologies, contact info, the speed we can draw in new clients now… Ful.io is amazing.

Yana L · SEO Consultant
Get started

See what the web is built with.

Start free with 25 technology lookups a month, or book a free demo to see Ful.io on your own data.