Monitor Backlinks - Easy Link Management - SEO Tool for automatically checking your backlinks.
Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.
Botify - Traffic Managers, SEO Managers, Webmasters:Crawl your site to extract all of its metadata and identify areas for improvement
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!
Backlinks by Neil Patel - A backlinks research tool for competitive intelligence
SEO Tools Centre - SEO Tools Centre provides SEO checker services for websites.