KeywordTool.io - KeywordTool.io is the best FREE alternative to Google Keyword Planner and Ubersuggest. It uses Google's autocomplete feature to get over 750+ long-tail keywords for any given query.
Linkly - Linkly is a tool to help affiliate marketers track clicks and improve revenues.
Google Trends - Explore Google trending search topics with Google Trends.
ClickPerfect - ClickPerfect is a platform that enables users to control their traffic coming to their ads, and they can maximize every click.
Keywords Everywhere - Free browser add-on for keyword volume, CPC & competition
ClixTrac - ClixTrac is a platform that allows users to know how many times the visitors have clicked their ads to services.