Semrush

Semrush is a web-based digital marketing and search intelligence platform for B2B marketers, SEO specialists, content teams, and agencies that need to grow and measure brand visibility across SEO, PPC, social, and AI search.

Key capabilities include:

• Keyword research and planning with tools such as Keyword Magic Tool, Keyword Gap, and Keyword Overview to find opportunities and compare keyword portfolios against competitors
• Rank and AI visibility tracking with position tracking for keywords (including local and device-specific views) plus prompt-level AI visibility monitoring to measure how brands appear in AI answers
• Technical and on-page SEO diagnostics via Site Audit and On-Page SEO Checker to surface issues and prioritize fixes
• Competitive and market analysis using Traffic Analytics, Organic Research, and Advertising Research to review competitor strategies across organic and paid channels

Pricing: Paid, with plans such as Pro, Guru, and Business; a free trial is available (seven days per the website).

What makes it notable is its breadth across multiple toolkits (SEO, content, advertising, social, local, and AI visibility) and access to an API plus an app and integrations ecosystem for reporting workflows and data access.