Ubersuggest - Want more traffic? Ubersuggest shows you how to win the game of SEO. Just type in a domain or a keyword to get started.
Acquainted - A simple tool to create conversational polls and surveys
Keyword Explorer by Moz - Find the best keywords to improve your website's SEO traffic
Decision Jam - Make better decisions quickly with your team
Keyword Surfer - Get search volumes & keyword data directly in Google.
AbTest.io - A free url shortener with A/B testing features