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.
AdRoll - AdRoll is a leader in retargeting display advertising. Draw the right people with the right strategies.
Google Trends - Explore Google trending search topics with Google Trends.
Google Marketing Platform - Google's unified and improved marketing and analytics tools.
Keywords Everywhere - Free browser add-on for keyword volume, CPC & competition
Kenshoo - Kenshoo provides marketing software and empower marketers with technology to build brands and generate demand across all media.