Slideshare -allows users the ability to upload and share publicly or privately PowerPoint presentations, Word documents and Adobe PDF portfolios.

280 Slides -provides the ability to create presentations, access them from anywhere, and share them with others.

Sliderocket -great online presentation tool. Must pay.

Prezi -the zooming presentation editor! It is a web-based presentation application and storytelling tool that uses a single canvas instead of traditional slides. Text, images, videos, etc.

PhotoPeach -automatically make your own free slides slows in seconds. Upload photos, pick music, add caption in the show, and more!

Voicethread -transforming media into collaborative spaces with video, voice, and text commenting. Great tool!!!

Animoto -Animoto turns your photos and video clips into professional video slideshows in minutes. Fast, free, and shockingly simple.

Xtranormal Make your own 3D movies in minutes. They offer a variety of characters, sets, and animations that you can easily add to any movie you create.

Glogster Poster yourself! Make your interactive poster easily and share it with friends. Mix images, text, music and video!