PitchWall - Browse new startups, and submit your mobile app/games startup's beta page here.
Soovle - Soovle is a customizable search engine provides the search suggestion of the best provider on the net.
Growing Page - Browse web projects and evaluate them by multiple criteria.
Google Trends - Explore Google trending search topics with Google Trends.
Product Hunt - A website that lets users share and discover new products
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.