Ahrefs is a SaaS company headquartered in Singapore, providing an all-in-one SEO toolset and free educational materials for marketing professionals. Founded in 2010, they help website owners globally increase search traffic. Ahrefs operates AhrefsBot, the world's second most active web crawler and the most active in the SEO industry, continuously updating its vast index of backlinks and keywords. Known for their lean, multinational team, Ahrefs focuses on product development, data quality, and aims to build a privacy-focused search engine that shares profits with content creators.