Simplified version of Keynote for Mac. Make slides and display them with a VGA adaptor from your iPad to projector. Includes several themes, ability to view your presenter notes on the iPad, and swiping to advance slides. iPad only.
Tap into WebEx meetings when you're away from your computer with this app on your iPhone or iPad. View shared content, participate in chat, works on 3G or WiFi. Works on iPod Touch for video only, use a phone to access the audio in that case. Free. Android version.
Watch and listen to live presentations including real-time presenter webcam video and screen sharing demonstrations. You can see who is in the meeting at any given time, and collaborate with others using live text chat. Free. Android version.