SEMrush is a software as a service (SaaS) company based in Boston that sells online visibility and marketing analytics software subscriptions. It was founded by Oleg Shchegolev and Dmitry Melnikov as a SEO tool and a browser extension before adopting the SaaS model. The software can provide intelligence data including website traffic information, keywords, projected AdWords spend, site audits, topic research, lead generation, and other SEO-related data.
The company's customers include eBay, Quora,, Hewlett Packard Enterprise, and BNP Paribas.
Oleg Shchegolev and Dmitry Melnikov started off as SEO enthusiasts who were interested in industry developments and new technologies and wanted to build a tool that could identify market trends and best industry practices. After sharing their first findings with friends and local influencers, more people were curious and started using it daily. Through word of mouth, the tool started increasing in popularity and a community of influencers grew as a result.
The software was first launched as Seodigger before being launched as a Firefox extension and was subsequently renamed to SeoQuake Company in 2007 and eventually to SEMrush with more than 650 employees in offices in Boston, Philadelphia, Czech Republic, Cyprus, and Russia. In 2016, it reached its milestone of 1,000,000 users with clients in more than 100 countries.

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