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