Ahrefs
Leading SEO and backlink-analysis platform — keyword research, rank tracking, content gap analysis, and AI-search modules.
Definition
Ahrefs is one of the two dominant SEO platforms (alongside Semrush) for keyword research, backlink analysis, rank tracking, and content audits. It maintains one of the largest third-party web indexes. Recent additions like Ahrefs Brand Radar track LLM citations and AI Overview appearances, putting it on the GEO/AEO tooling map.