Linkody - Save time and money by managing your SEO linkbuilding with Linkody.
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
Backlinks by Neil Patel - A backlinks research tool for competitive intelligence
Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.
SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
SEOquake - SEOquake provides a browser extension to conduct on-page SEO audit.