Ahrefs is an SEO tool suite headquartered in Singapore, founded in 2010, with a backlink index of 42 billion+ web pages and a 10 billion+ keyword database, widely used by SEO professionals worldwide.
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Cognitive SEO is a US-based SEO toolset focused on content optimization and backlink analysis, offering Content Intelligence, rank tracking, and site audits from about $49.95/month per tool.
Capacities is an object-based personal knowledge management tool from a German team, launched in 2019, organizing notes, people, projects, and ideas as objects; the free plan offers unlimited objects, and Pro unlocks calendar and backlink views for about €10/month.
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1 results shownLink Building Strategies 2026: How to Get High-Quality Backlinks
Backlinks remain a core SEO factor. This article introduces effective link building strategies for 2026.