Discover internet technology trends on websites
Find the technology stack behind any website.
Build targeted technology reports based on what any website runs on.
We track 75,000+ web technologies and frameworks across millions of websites.
Technology Trends
Trusted by Businesses of All Types Worldwide
Here’s what our customers have to say about us
Ful.io has been a game-changer for our market research. The ability to instantly analyze what technologies our competitors are using has helped us make informed decisions about our own tech stack. Highly recommended for any growing startup.
Todd Dunsmore
Doja Marketing/Defi Founder
Ful.io's apps and tools have completely changed the way we look at traffic and identify prospects. Before, our R&D team tried BuiltWith, then worked to develop our own technology. But with Ful.io, we can save both time and money.
Robert Kaene
The Wednesday Club
We're always looking for new ways to boost our advertising efforts and analyze websites to improve our processes. Ful.io has been a perfect partner throughout. We've been able to discover more valuable data on prospects than we ever did on our own.
Mad Singers
SEO Mastery Summit
Any ecommerce platform not using Ful.io's technologies is seriously missing out. The crawling tool at Ful.io is the best we've used so far. We love that you can pull it up right in the Chrome browser too. Technologies, contact info, the speed we can draw in new clients now... Ful.io is amazing!
Yana L
SEO Consultant
Companies need an edge, and Ful.io provided that edge for us. We'd previously used BuiltWith, but the data and analytics capabilities of Ful.io were a better fit for us.
Nicholas Altimore
Sirlinksalot
Being able to quickly identify the software and security tools a website is using helps us assess risks and provide better recommendations. Ful.io’s technology profiling is both powerful and incredibly easy to use, which is exactly what we needed. Ful.io just works for us. Their technology is incredible.
Chris Richards
Utterly Digital
Frequently asked questions
What is Ful.io?
Ful.io is a technology intelligence platform that helps businesses identify, analyze, and track the technology stack of any website. From individual lookups to bulk technology reports covering millions of websites, Ful.io gives you actionable data for sales, marketing, and research.
Who can use Ful.io?
Ful.io is built for sales teams, marketers, developers, and researchers who need to understand which technologies companies use. It is useful for prospecting, competitive analysis, market research, and partner discovery.
Is Ful.io free to use?
Yes. Ful.io offers a free plan that includes 25 technology lookup credits per month. Paid plans unlock additional credits, bulk technology reports, and API access.
Can I generate a report of all websites using a specific technology?
Yes. Our Technology Reports feature lets you search any technology and get a downloadable list of all websites using it. This is useful for market research, lead targeting, and competitive analysis.
Do you sell my data to third parties?
No. We do not sell user data to third parties. All collected data is handled in accordance with applicable privacy laws.
How can I contact Ful.io support?
You can reach us via email at support@ful.io. We aim to respond to all inquiries within 24 to 48 hours. Premium users receive priority support.
Build technology reports for any website or market segment with Fulio
Our Technology Reports dashboard lets you filter by technology, category, and more to build a precise list in minutes.