Monitor Backlinks - Easy Link Management - SEO Tool for automatically checking your backlinks.
Keyword Discovery - Keyword Discovery is a keyword research and analysis tool.
Backlinks by Neil Patel - A backlinks research tool for competitive intelligence
SheerSEO - SheerSEO helps you to track Google Search Engine Rankings for critical keywords. PageRank, Back Links and more.
Botify - Traffic Managers, SEO Managers, Webmasters:Crawl your site to extract all of its metadata and identify areas for improvement
iSpionage - AdWords competitor keywords with the click of a button and monitor competitor PPC landing pages.