
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.
DailyBacklinks may suit founders, SEOs, and small businesses looking for backlink opportunities and link monitoring. Its free plan offers one new DR30+ opportunity daily.