Loganix - The most powerful spam blocker
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
SubmitCore - SubmitCore offers web design and internet marketing services.
SEOmator - SEO website analysis & audit tool
Referrer Spam Remover - Remove spam bots from your Google Analytics data
Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.