Treasure Hunt - A scavenger hunt app for kids, powered by machine learning
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.
Gift Hunt for WordPress - Online treasure hunt on your WordPress site
Google Trends - Explore Google trending search topics with Google Trends.
PlayTours - Create robust and affordable team-building games such as scavenger hunts, team races, gamified events, and self-guided tours. Get an Unlimited free trial.
Keywords Everywhere - Free browser add-on for keyword volume, CPC & competition