TechnologyChecker vs Wappalyzer

TechnologyChecker is a technology intelligence platform for B2B sales, go-to-market, and market analysis teams. It detects technologies across 29.9M live business domains, with coverage stated as 40,000+ technologies. Detection uses signals including HTTP headers, JavaScript fingerprinting, HTML parsing, and DNS lookups, and can identify backend infrastructure as well as standalone tools. Historical technology timelines reach roughly 20 years, while real-time signals cover adoption, churn, and replacement changes. The platform also offers verified decision-maker contacts matched to technology signals and audience exports for LinkedIn, Facebook, and Google Ads. Its API describes 29 REST endpoints for detection, company data, category share, and adoption, churn, and switch signals. Access is available through web, API, and a Chrome extension. The Free plan provides 100 lookups per month, six months of history, single-result CSV export, and basic company enrichment. Pro is $89 a month, billed $890 a year; Scale is $249 a month, billed $2,490 a year. Lookups pause when the monthly limit is reached until renewal or upgrade.

Wappalyzer turns public website signals into technographic data for prospecting, record enrichment and monitoring market changes. It identifies thousands of technologies across millions of websites using signals such as HTML, scripts, headers, cookies and other fingerprints. Users can upload CSV or TXT files with up to 100,000 URLs for bulk analysis. APIs cover technology lookup, lead lists, subdomain discovery and email verification. Live results count as five lookups each; cached results are verified within the last 30 days. The service offers browser extensions and integrations including Salesforce, HubSpot, Pipedrive, Gmail, Zapier, Make and an iPhone app. Basic extension detection runs locally, and sharing limited website-level data can be disabled in settings. The free plan includes 50 technology lookups and 50 email verifications per month, five website alerts and sample lead lists. Pro costs $250 a month for one user. Plan-included API credits expire after 60 days, while credits bought in bundles expire after 365 days. Wappalyzer is aimed at sales, marketing, operations, strategy, partnerships and security teams.