In Pictures: 20 awesome Cloud services you've neve...
Prezi (presentation software)
Launched in 2009, Prezi offers an alternative to PowerPoint-style slideshows. Since the service uses a virtual whiteboard instead of slides, you can display the entire concept of your presentation at once. As you go through the presentation, you can pan across the whiteboard to highlight different ideas. Prezi recently launched a new set of features for its service, including 3D backgrounds and fade-in animations.
In Pictures: 20 awesome Cloud services you've never heard of