Promo Self Serve - Launch a promotion across the internet in 90 Seconds
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.
YesGraph - Boost viral growth by recommending who users should invite
Google Trends - Explore Google trending search topics with Google Trends.
Nouncy - Build a network of brand ambassadors
Keywords Everywhere - Free browser add-on for keyword volume, CPC & competition