BuiltWith

What it is, in plain English

BuiltWith helps you discover what technologies websites use and turn that into lead lists and market intelligence. The homepage highlights a large catalog of web technologies, filtering by vertical, location, traffic, and related attributes, plus sales intelligence positioning and market share analytics.

It also promotes API access, CRM integrations, a browser extension, and broader datasets such as ecommerce product coverage for research-heavy GTM motions.

How we use it on real work

We use BuiltWith to build account lists where the tech stack is the qualifying signal, then enrich contacts elsewhere if needed.

• Define which technologies mean true ICP versus noisy adoption.
• Export with consistent naming so CRM tech fields stay comparable.
• Pair stack signals with intent or engagement data when possible.
• Refresh lists when major migrations happen in your target market.

How we teach it in the community

Beginners build one small list and manually sanity-check ten accounts. Advanced users combine BuiltWith exports with enrichment waterfalls.

• Exercise: two competing tech filters, compare meeting rate after 200 touches.
• Teach how to explain stack-based outreach without sounding creepy.
• Workshop: API versus UI export for ops maturity.

Good fit, and when we’d pick something else

BuiltWith fits teams whose ICP is defined by visible on-site technology adoption.

• Good when: stack data changes who you call and how you pitch.
• Good when: you need market sizing and trends, not just one-off lookups.
• Skip when: your ICP is not correlated with public tech signals.
• Skip when: you lack a process to turn accounts into verified contacts.