Ahrefs

Ahrefs is a privately owned software company founded in 2010 and headquartered in Singapore. The company employs over 100 people and develops a suite of online SEO tools and free educational materials for marketing professionals. Ahrefs' tools include a site explorer, keyword explorer, content explorer, and rank tracker, which help users research and analyze their website's performance, identify and track keyword rankings, and explore content that is performing well in search engine results. The company also offers a variety of educational resources, including blog posts, tutorials, and webinars, to help users learn more about SEO and digital marketing.