
Ahrefs
8.4#7 in seo toolsFrom $29 a monthFree planWebAPI
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Ahrefs suits people working on SEO, including keyword and competitor research, audits, and backlink analysis. Its higher plans add project, tracked-keyword, crawl-credit, and user allowances, while Enterprise includes administration and security controls.
It suits SEO professionals, content marketers, competitor analysts and website owners who want to inspect backlink data or export results. Users should be comfortable sending submitted URLs or domains to the Keywords Everywhere API.