SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
SERPWatcher - SERPWatcher is a rank tracking tool built with focus on effectivity and ease of use. Stop wasting time with conventional rank trackers.
SEOmator - SEO website analysis & audit tool
SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
Lumar - (Previously DeepCrawl) Hosted SEO spider to analyze and find problems with websites.
SEO PowerSuite - Get all SEO tools in one pack - download free edition of SEO PowerSuite and get top 10 rankings for your site on Google and other search engines!