The software a company buys is a decision it publishes
Every website carries the record of what its team chose: the platform, the payment stack, the tools they measure themselves with. Ful.io reads that record across the web, so a market you were guessing at becomes something you can count.
Single-site lookups are free and need no account.
ShopifyEcommerce
StripePayment Processors
Google AnalyticsAnalytics
Klaviyoadded Oct 14Email Marketing
IntercomLive Chat
CloudFlareCDNTake it anywhere
Claude
Chrome
HubSpot
Firefox
ChatGPT
Edge- Your WebApp
Start where your competitor is most honest
A pitch deck tells you what a company says it does. Its website tells you what it actually bought. Point Ful.io at any domain and the full stack comes back in one read: the commerce platform, how it takes money, what it measures itself with, where it is hosted.
The same read works on a prospect you are about to call and on a customer you are about to renew.
Look up a site →ShopifyEcommerceStripePayment ProcessorsGoogle AnalyticsAnalyticsKlaviyoEmail MarketingIntercomLive ChatOne technology, and the market around it
Turn the question around. Instead of one company’s stack, ask the index for every website running a given tool, then narrow it to the countries and domain endings you actually sell into.
Every company on that list has already bought for the problem you solve. That is a displacement list, and it exports as a clean file or goes straight to your CRM.
Build a report →A stack is a film, not a photograph
Adoption moves. A company drops the tool you compete with, or quietly adds the one that signals a replatform. Put the accounts that matter on a watchlist and each change is recorded with the date it happened.
The week a competitor loses an account is a short window. Signals are how you find out inside it rather than at renewal.
Watch a website →
OptimizelyA/B TestingToday, 09:41
SegmentCustomer Data PlatformSep 18
HubSpotCRMAug 30
BraintreePayment ProcessorsAug 12Three moves, then it runs itself
Read one site
Start with a competitor, a customer or your own domain. Free, no account.
Widen to the market
Take the technology that matters and ask for every site running it, narrowed to your countries.
Keep it current
Watch the handful that matter so the picture updates itself instead of going stale.
Ful.io reports on websites and the software they run. It reads the same public pages a search engine reads, nothing behind a login. It is a record of public technical facts about company websites, not a window into anyone’s internal systems. How the data is made