SimilarWeb

SimilarWeb is the most widely used competitive intelligence tool for analyzing the web traffic of any site: monthly visitors, where they come from, how long they stay and which are the similar sites. A window into data that competitors don't want you to see.

SimilarWeb is a competitive intelligence platform based on web traffic analysis. Its strength is that you can analyze any website, not just your own: enter a URL and get estimates on monthly visits, pages per visit, average session duration, bounce rate, geographic traffic distribution, source channels (organic, social, referral, direct, paid), main organic and paid keywords, and similar sites by category and audience. These data are estimates based on user panels, ISP data and proprietary algorithms: they're not as accurate as Google Analytics (which has access to the site's real data), but they're the only way to estimate competitor traffic without access to their analytics. SimilarWeb is used for competitive benchmarking, keyword research, market analysis, evaluating potential partners or acquisition targets, and identifying competitor traffic strategies. The free version shows aggregated, limited data; paid plans unlock monthly detail, historical data, exports and advanced features.

For marketers, market analysts, strategists and investors who want to understand competitor web traffic and digital strategies, benchmark industries and identify market opportunities.

SimilarWeb has a free version with limited data — 3 months of history, only top keywords, aggregated traffic without detailed monthly data. The Starter plan starts at $125 per month billed annually and unlocks more months of historical data, detailed monthly data, exports and advanced features. Professional and Enterprise plans are at much higher prices (in the $500-1,000+ per month range) for full data access and advanced intelligence features. SimilarWeb is one of the most expensive competitive intelligence tools in the category.