The software listed here allows you to create presentation or slideshows for your content. They are alternatives to Mircosoft's Powerpoint. You can use these software to create good-looking presentatations and usually, the software contains good graphics to help shape your presentation.
TeeChart Office - Free Presentation Software
Open source software, which enables you to chart and plot easily. Runs on both Windows and Linux.
Powerbullet Presenter - Free Presentation Software
Flash presentation creator. Exports to swf format and includes thing like sideshows and transition things and more.