Some people claim that Beamer (a class for LaTeX) is very good and easy to learn.

But you have to be familiar with LaTeX itself and have it running on your system

In my opinion "Prezi" is the best. Regards ! Oskar

http://prezi.com/

Prezi is a very good tool. If you have to do a scientific presentation with some formulas or calculation you can create a slide Show with Mathematica.

See the link below

http://reference.wolfram.com/language/howto/CreateASlideShow.html 

I'll have to have a look at Prezi again thanks

There's one new great tool that I'm using recently to build my research figures and presentations, it's very easy to use and it has a gorgeous cientific illustrations database, you should give it a try:

http://mindthegraph.com/

Best regards, Juliana.

The Best Presentation Software

• Google Slides for collaborating on presentations
• Zoho Show for built-in broadcasting tools to stream presentations
• Slides for sharing team presentation assets
• Prezi for animated, non-linear presentations
• Microsoft Sway for quickly changing your presentation style
• Canva for creative presentations
• Adobe Spark for turning presentations into video
• Swipe for interactive presentations
• Slidebean for automatically making slides from an outline
• Evernote Presentation Mode to turn notes into a presentation
• Deckset for easy Markdown-powered presentations
• Keynote for beautiful templates
• PowerPoint Online for a simplified PowerPoint in your browser

Best Regards Alan Chamberlain

You can use my LaTeX based example. Here is a code:

Code Scatterplot Matrices of the Geomorphic Structure of the Mari...

the output presentation:

Presentation Scatterplot Matrices of the Geomorphic Structure of the Mari...

the GitHub repository with all the data (code+figures+pdf):

https://github.com/paulinelemenkova/Presentation-Institute-of-Geology-RAS