WhosBuilt

Free tool that inspects any site's tech stack, hosting, DNS, and creator metadata

Webfreeglobal

WhosBuilt is a free tool that inspects a website's public technical signals, including its tech stack, hosting provider, DNS records, SSL certificate, and registrar data, to identify how the site was built and who runs it. It is aimed at developers and researchers curious about another site's infrastructure.

Website

Full match profile

Behind the summary, Matchbox keeps a richer profile of WhosBuilt - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

Claim WhosBuilt to unlock →

Try Matchbox with your own problem

Describe what is not working - we’ll show you whether WhosBuilt (or something else) actually fits.

Try a problem