Whatsmyserp - Powerful Rank & Serp Tracking. Completely Free.
Broken Link Builder - Broken link building is the link building method that is a white-hat link building strategy which acquires links by finding broken links and replacing them.
SEOmator - SEO website analysis & audit tool
Linkody - Save time and money by managing your SEO linkbuilding with Linkody.
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.
Linkstant - Discover Your New Links, Instantly.