SimilarWeb is a market intelligence platform providing insights and analytics for any website or app.
Custom pricing based on requirements
Best Netcraft Alternatives ranked by AI · updated Aug 2026
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Netcraft provides internet security and infrastructure intelligence, including site reports that expose hosting, server, certificates, and selected technologies. It is used by security professionals, infrastructure teams, researchers, and organizations investigating websites.
Top 6 Netcraft alternatives
BuiltWith is a web technology profiler tool that helps you find out what websites are built with.
Free version available, with paid plans starting at $295/month
Wappalyzer is a browser extension that identifies the technologies used on websites. It detects content management systems, eCommerce platforms, web servers, JavaScript...
WhatRuns is a browser extension that helps you identify technologies used on websites.
Free with premium options
WebTechSurvey is an online service for identifying the technologies used by websites, such as content management systems, frameworks, analytics tools, and hosting...
Pros
- Provides quick technology-stack lookups without requiring software installation
- Useful for basic competitor and website technology research
- Covers multiple categories of web technologies
Cons
- Less extensive company and traffic intelligence than BuiltWith or SimilarTech
- May provide fewer browser extensions and workflow integrations than Wappalyzer
- Technology detection depth and update frequency may vary by website
Hosting Checker is a free online service that identifies the hosting provider and infrastructure associated with a website. It is intended for...
Pros
- Provides fast domain-based hosting-provider lookups
- Requires no installation or account for basic checks
- Simpler and more focused than full technology-profiling platforms
Cons
- Offers less technology detail than BuiltWith or Wappalyzer
- Results can be inconclusive when sites use CDNs, proxies, or cloud infrastructure
- Lacks the monitoring and historical data available in enterprise tools
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