SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.

ClearVoice - ClearVoice is a content marketing platform and service solution.

Majestic - Majestic - Link intelligence tools for SEO and Internet PR and Marketing. Site Explorer shows inbound link and site summary data.

Paperflite - Paperflite is a prospect engagement platform to enable business development reps to see what sells.

Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.

Crescendo - Music note writing and composing software