SEOMoz spends much of their time developing SEOmoz PRO, a complete set of software, tools, and resources to maximize your search engine optimization. PRO members get their campaign-based web app, dozens of SEO tools, webinars, and full access to Open Site Explorer.
Linkscape SEO Link Building Tool
SEOMoz is also known for Linkscape, their system that indexes the web and generates detailed link graph analytics. The SEOMoz index includes data and metrics for over 350 billion URLs and is updated each month. Linkscape data powers many of their own tools, including Open Site Explorer and SEOmoz PRO. Linkscape also includes a data-services API that can supercharge your application or tools with valuable link and site intelligence data.