Whatsmyserp - Powerful Rank & Serp Tracking. Completely Free.
Monitor Backlinks - Easy Link Management - SEO Tool for automatically checking your backlinks.
SEOmator - SEO website analysis & audit tool
Topvisor - All in one SEO and PPC tools for better marketing.
Panguin Tool by Barracuda Digital - See your website's Google organic visit data overlaid with Google's major algorithm updates and changes to easily identify the impact on your website. Technology by Barracuda Digital.
Botify - Traffic Managers, SEO Managers, Webmasters:Crawl your site to extract all of its metadata and identify areas for improvement