myQuiz.org - myQuiz is an Audience Engagement Cloud Platform
guidebook - The best and simplest way to create a mobile guide for your event or venue. Features
TestMOZ - TestMOZ is an online platform for creating interactive quizzes and questions to keep your audience engaged on your social media, websites, or blog channels.
Whova - Whova event app, online registration, event management software, and event marketing help you create the most engaging and organized event ever. Learn more
Poll Everywhere - Audience response system that uses mobile phones, twitter, and the web. Responses are displayed in real-time on gorgeous charts in PowerPoint, Keynote, or web browser.
Flowh - A Calendar Community in the style of Twitter. Follow, be followed, refollow (retweet).