Ahrefs

Ahrefs is a leading provider of SEO tools and services, renowned for its extensive web crawling capabilities and robust data processing infrastructure. For over 10 years, Ahrefs has been collecting and processing petabytes of data daily, with its AhrefsBot being the most active web crawler among all SEO tools. The company is highly trusted within the SEO community, with 64% of SEO professionals preferring Ahrefs’ link data over competitors and 67% using Ahrefs’ Domain Rating as their primary SEO metric. Ahrefs offers an all-in-one SEO toolset that includes Site Explorer, Site Audit, Keywords Explorer, Content Explorer, and Rank Tracker. The Site Audit tool checks for over 160 pre-defined SEO issues, while the Rank Tracker monitors Google rankings across 190 countries. Site Explorer provides insights into organic traffic, backlink profiles, and paid traffic performance, and Content Explorer helps discover top-performing content in a database of 15.3 billion web pages. Keywords Explorer generates thousands of keyword ideas with reliable metrics. Ahrefs also offers a free limited access tool called Ahrefs Webmaster Tools for website owners. The company’s infrastructure includes 4100 servers, 917K CPU cores, 6PB RAM, 33PB HDD, and 673PB SSD, supporting an organic search traffic index covering 189 locations and 595 million keywords, and the world’s largest backlink index updated every 15–30 minutes. Ahrefs runs its own search engine called Yep and provides free courses through its Academy and video tutorials on its YouTube channel. The company also offers a private community called Ahrefs Insider for SEO-obsessed marketers. For enterprise clients, Ahrefs provides features like portfolios, opportunities, instant keyword clustering, and GSC integration, along with tailored support including a dedicated account manager and 24/7 multilingual chat support. Additionally, Ahrefs organizes an international SEO and digital marketing conference called Ahrefs Evolve.