Direction Local - Quickly Boost Your Local Search Rankings
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
Searchmetrics Suite - SEO Software
Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.
Clearscope - Data-driven content performance optimization platform
SEOquake - SEOquake provides a browser extension to conduct on-page SEO audit.