For competitive intelligence and SEO teams, Similarweb is a digital intelligence platform that estimates traffic and demand across 100M+ websites and 4M+ apps, using AI agents to benchmark competitors and surface market trends.
Presence & Market Position
#19 of 113
Traditional SaaS Going Headless
▲ 377 60-day move
Measures earned, engagement-weighted share of voice across the GTM voices panel. Methodology →
Similarweb is working to position itself as the measurement layer for the AI era of search and marketing — extending from its original traffic-and-competitor-analytics business into tracking how brands show up (or don't) inside AI answers, alongside the zero-click and ad-efficiency questions it has long tracked. That AI-visibility research has become one of the more frequently cited data sources in current marketing conversation: analysts and practitioners pull its zero-click search figures, its AI traffic-impact studies, and its brand-visibility benchmarks into their own commentary, and it appears often in roundups of market-research and competitive-positioning tools. It also turns up as a named data partner behind newer agent-connectivity products, extending its reach beyond direct-user tools.
6sense
Backstory
Lusha
Cognism
Apollo.ioDHL, Danone, Mayo Clinic, Rakuten, Penguin Random House, The Hershey Company, Asda, Dentsu, SparkToro, accessiBe
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Business Profile
Similarweb was founded in 2007 in Tel Aviv by Or Offer, building on an earlier attempt to track competitors for a jewelry business into a general web-analytics tool. The company went public on the NYSE in 2021 under the ticker SMWB and has continued to expand its data footprint since, acquiring mobile-intelligence firm 42matters in 2024 to fold app analytics alongside its web data. That acquisition fed directly into the AI-visibility pivot: Similarweb rolled out an AI sales assistant and a sales-AI module in 2024, then a set of purpose-built AI agents in 2025, layering automated analysis on top of nearly two decades of underlying traffic and app data.
Agent Readiness
Not yet graded.
Measures how easily your agents can build on it — API, MCP, CLI, SDK, docs depth. Methodology →
Similarweb shipped a public API early, then layered a set of purpose-built AI agents on top of it in 2025 — covering SEO strategy, trend analysis, meeting prep, and outreach — followed by an MCP server in September 2025 that connects the same traffic, keyword, and app-intelligence datasets directly to Claude, Cursor, and other MCP-compatible tools. The MCP page also flags an expanding agent roster still coming, positioning the current suite as a first release rather than a finished set.
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