Semrush

Semrush is a relatively popular search engine optimization tool set from the company of the same name based in Pennsylvania and founded in 2008. Largely the platforms relies on competitive intelligence, and features SEO staples like backlink checking, keyword analysis to refine SEO and PPC campaigning and locate low-cost / high-yield keywords, analysis of competitors who co-occupy desired ad and listing spaces, domain vs. domain analysis, as well as site audit and domain tracking. Semrush can be acquired for as little as $69.95 on a monthly basis (with a 7-day money back guarantee in place of a free trial) with the Pro pack, up to $549.95 per month with the Business pack; features and tools are the same across tiers, only usage limits change. Discounts are available for annual subscription. Semrush boasts well-known users, like Forbes, Paypal, Wells Fargo, and many marketing agencies.