BuiltWith vs PublicWWW

BuiltWith profiles websites to help users research technology adoption, ecommerce activity, web usage trends, and potential sales leads. The platform says it tracks 127,671 web technologies and provides usage lists covering more than 370 million active domains, with over 18 years of usage history available through its plans. Users can find ecommerce websites and products, filter reports by category, region, or technology, and export results. Uploaded website lists can be analyzed, with report metadata and technology-use matrices exportable to Excel or CSV. Future Customers uses technology overlap to recommend potential leads. BuiltWith offers API access with XML and JSON feeds, browser extensions for Chrome, Firefox, and Edge, and CRM integrations including Salesforce, HubSpot, Pardot, Zoho CRM, Close.io, and Microsoft Dynamics 365. Individual website lookups are free; the Free plan permits 10 detailed lookups per day. Advanced costs $144 a year. Monthly plans have a one-month minimum and yearly plans a one-year minimum, and plans can be canceled at any time. The maker was founded in 2007 and is based in Sydney, Australia.

PublicWWW is a web and API search service for locating alphanumeric snippets, signatures, or keywords in HTML, JavaScript, CSS, and plain text. Queries support exact phrases, multiple terms, alternatives, exclusions, depth, site and IP filters, and regular expressions. Results are ordered by website popularity and usually appear within a few seconds. The homepage reports 969,312,480 indexed pages as of October 7, 2026. Free access reveals sites in the top 1,000,000; registration opens results from the top 3,000,000, while remaining results require payment. The Free plan costs nothing and allows 1,000 rows per search, a 100-row cluster, and 20 rows with snippets. Business costs $199 a month and Enterprise $499 a month, with larger limits. CSV downloads are available, and the paid-key API returns JSON, XML, CSV, TSV, NDJSON, or plain text. Signed-in users can save, combine, filter, and download domain clusters.