SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
TubeBuddy - The Premier YouTube Channel Management and Optimization Toolkit
SEOmator - SEO website analysis & audit tool
DemandSphere - DemandSphere is an advanced-level software that helps marketers to create the best digital appearances of their brands.
Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.
Searchmetrics Suite - SEO Software