SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
Ahrefs - Ahrefs is a toolset for SEO and marketing. We have tools for backlink research, organic traffic research, keyword research, content marketing & more. Give Ahrefs a try!
SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
Brightedge - BrightEdge is the leading content performance marketing platform, helping more than 1,200 customers generate more organic traffic. BrightEdge is based in San Mateo, CA with offices in New York, Seattle, Chicago, Tokyo, Sydney, and London.
Serpstat - Search analytics, Rank tracking, Backlink analysis and Site Audit tool.
WP Meta SEO - WP Meta SEO gives you the control over all your meta content and images.