Unity Ads - Unity Ads allows to supplement the existing revenue strategy by allowing to monetize thr entire player base.
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.
MoPub - MoPub is a mobile monetization platform that helps publishers drive more revenue from advertising and mobile transactions.
Keyword Explorer by Moz - Find the best keywords to improve your website's SEO traffic
Appodeal - Appodeal is a supply-side platform for mobile apps, that serves and protects publishers rather than advertisers.
Keyword Surfer - Get search volumes & keyword data directly in Google.