Ahrefs Backlink Checker - With the world's biggest index of live backlinks (over 15 trillion), Ahrefs Backlink Checker will show you the most complete backlink profile for any website.
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
Whatsmyserp - Powerful Rank & Serp Tracking. Completely Free.
SEO Site Checkup - Find comprehensive search engine optimization (SEO) tools for your site.
Backlink Tool - A backlink tool to index your links quickly and freely.
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.