If you are looking for an alternative presentation authoring tool then have a look at revealjs.
reveal.js is a framework for easily creating beautiful presentations using HTML. You'll need a browser with support for CSS 3D transforms to see it in its full glory.
I've used it a couple of times now in several workshops and the crowd love it. There is a certain degree of html knowledge required to use it, but the results are worth it. Checkout their site to see a presentation in action.
http://lab.hakim.se/reveal-js/#/
One of the things I love about revealjs is the ability to broadcast presentations and update any viewers device with the page you are currently presenting (Multiplexing). It uses Socket.io server to broadcast events from the master to the clients. See a demo at http://revealjs.jit.su/.
