SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
Linkody - Save time and money by managing your SEO linkbuilding with Linkody.
SEOJet - Instantly build customized backlink plans (that actually work) for your SEO clients.
Backlinks by Neil Patel - A backlinks research tool for competitive intelligence
Kerboo - Kerboo is a backlink analysis software for brands and agencies.
LinkMiner - Find competitors' backlinks you can replicate easily. LinkMiner is an easy-to-use backlink checker tool focusing on backlinks that matter.