SEMrush

Based in Boston, Massachusetts, this company operates as a platform provider rather than a traditional service agency, with a team of more than 200 people serving business owners, agency owners, SEO specialists, content marketers, and enterprise clients across industries such as retail, ecommerce, SaaS, B2B tech, healthcare, and local business. Its stated service areas include search engine optimization, web development, digital strategy, and market research, and its tools are built for users ranging from solopreneurs and small teams to mid-market and enterprise organizations, including other agencies managing client strategies. The core offering centers on a software suite covering keyword research, competitor and market analysis, local SEO, backlink analysis, and AI brand sentiment tracking, alongside content creation support, technical site health audits, digital PR features, rank tracking, and marketing reporting. A product called Semrush One is positioned to unify traditional SEO with visibility in AI-driven search and answer engines, tracking prompt-level brand mentions and AI market share against competitors. Additional access points include the Semrush API and Semrush MCP, which connect the underlying traffic, keyword, and market data directly into AI assistants and third-party workflows. The company also distributes a set of free tools, including an AI Visibility Checker, SEO Checker, Website Traffic Checker, Keyword Tool, and Backlink Checker, and maintains educational resources through a blog, knowledge base, and academy.