Imakiku - Imakiku is an audience response system for real-time voting, posting comments, and surveying.
Draftsend - Presentations you can 👀 and 👂
schnaq - Create an engaged and interactive audience with the schnaq Q&A, polls and more.
Reveal.js - A framework for easily creating beautiful presentations using HTML
CloudVOTE - Interactive training management system for instructor-led group training with audience response, content management, offline sync, and LMS integration.
Slidebean - Presentations that design themselves