SEOmator - SEO website analysis & audit tool
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
RegiRank - Grow your YouTube channel even more by improving the SEO with just a few clicks and track your most important keywords easily using our youtube rank checker
Sitechecker - All-in-one SEO platform including rank tracker, website SEO audit tool and website changes monitoring. Detailed reports by 100+ parameters with how-to-fix guides.
Lumar - (Previously DeepCrawl) Hosted SEO spider to analyze and find problems with websites.
SEO Site Checkup - Find comprehensive search engine optimization (SEO) tools for your site.