The 5 Best Free Slideshow Presentation and Creation Tools for Teachers

http://elearningindustry.com/the-5-best-free-slideshow-presentation-and-creation-tools-for-teachers

A List of 20 Free Tools for Teachers to Create Awesome Presentations and Slideshows ~ Educational Technology and Mobile Learning
http://www.educatorstechnology.com/2012/05/list-of-20-free-tools-for-teachers-to.html
1-  SlideShare

It Offers  users the ability to upload and share publicly or privately PowerPoint presentations, Word documents and Adobe PDF Portfolios.

2-  Animoto  ( no option for collaboration)
Animoto turns your photos and video clips into professional video slideshows in minutes.

VUVOX allows you to create interactive slideshows and presentations from photos, video and music from Flickr, Picasa Web Albums, YouTube, Facebook and more.

Knovio gives life to static slides and with a simple click you will be able to turn them into rich video and audio presentations that you can share with your friends and colleagues via email or popular social media websites. Knovio does not require any software installation or download, it is all web based.

6- HelloSlide

7- Jux
Jux is one of the best showcase for your stories. You can embed videos and photos from your hard drive or from a URL.
8-  Slidestaxx
Slidestaxx is a great presentation tool. It allows its users to create amazing social media slideshows. You can now gather media from different sources and put them together in an engaging slideshow using Slidestaxx to embed it in your blog, website or wiki.
9- Present.me
It allows its users to record and share their presentations using their webcams.

11- Slideboom

12-  Zentation

13- Empressr

14- VoiceThread

15- Slidesix

16- Zoho Show

17- Prezentit

18- Popplet

19- AuthorStream
20- SlideRocket

21- Prezi

“Best Presentations of the Decade”

http://portal.sliderocket.com/sliderocket/Best-Presentations-of-the-Decade

8 Best PowerPoint Presentations: How to Create Engaging Presentations

https://www.udemy.com/blog/best-powerpoint-presentations/

Make PowerPoint Presentations Using Movie Maker

http://www.youtube.com/watch?v=ieDTmRgb3-Y

Creating Presentations in Windows Movie Maker

http://www.kidsnetsoft.com/global/moviemaker.pdf

How to Make a PowerPoint video presentation in Windows Movie Maker

http://movie-maker.wonderhowto.com/how-to/make-powerpoint-video-presentation-windows-movie-maker-322520/

Using Windows Movie Maker to Edit or Compile Media for Use with Presentations and Classroom Activities

http://matnonline.pbworks.com/f/Movie+Maker+presentation+pdf.pdf

Create Interactive Infographics

http://infogr.am/

visual.ly

http://visual.ly/

Piktochart

http://piktochart.com/

1001Freefonts.com

http://pf.kizoa.com/
Kizoa is neat but expensive. It does most of what iMovie does, including direct posting to social media. However, one needs to pay in order to do that.