Kitcast Tv - Kitcast.tv digital signage software allows you to show your content on any screen using just Apple...
Prezi - Welcome to Prezi, the presentation software that uses motion, zoom, and spatial relationships to bring your ideas to life and make you a great presenter.
Xibo - Digital Signage for Everyone!
Reveal.js - A framework for easily creating beautiful presentations using HTML
Skykit - Google-based digital signage CMS for enterprise deployment
Google Slides - Create a new presentation and edit it with others at the same time — from your computer, phone or tablet. Free with a Google account.