SEMrush is an advanced keyword research tool, allows you to perform in-depth analysis of your competitors, and provides deep link analysis.
Moz is a platform for analyzing, and monitoring SEO, social media marketing, link building, and various other online marketing.
Ahrefs is an independent tool for SEO analysis with a wide range of features. It is designed for SEO specialists and site owners.
Majestic SEO provides a powerful Website tool that helps you to improve your rankings and attract high targeted visitors to your site.
Hootsuite is a social relationship platform for Twitter, Facebook, LinkedIn and Google+ Pages from one secure, web-based dashboard.
BuzzStream manages word-of-mouth marketing campaigns by organizing and driving buzz, inbound-links, and traffic to websites.
Raven Tools is the ultimate platform for managing search engine optimization and social media campaigns.
Authority Labs is search engine rank monitoring software. Track and analyze performance in Google, Yahoo!, and Bing.
Long Tail Platinum is the keyword research software used by marketers and SEOs to find the best long tail keyword ideas and analyze the competition.