Lead listsFind companies running your competitor's technology Technology lookupLook up any domain's full tech stack, free Change alertsGet notified when a prospect's stack changes Contact dataReach decision-makers at companies in your list Email verificationVerify addresses you already hold APIPipe technology signals into your CRM via webhook

Technologies Categories Methodology Coverage & limits Reports Changelog Docs

Pricing How it works

Sign in Start free

Browser fingerprinting; JavaScript libraries

FingerprintJS6,221observed ClientJS672observed

Product

Lead lists Technology lookup Change alerts Email verification API Pricing

Use cases

Lead generation Competitor analysis Market research Data enrichment

The data

Methodology Coverage & limits Technologies Categories Reports Changelog

Company

About vs Wappalyzer vs BuiltWith vs PredictLeads Terms Privacy Attribution

AnsafiObserved monthly from the real web.

Technology observations derived from HTTP Archive, an open monthly crawl of the real web. Data sources.

Browser fingerprinting; JavaScript libraries technologies — market share | Ansafi