Another web based "power-point-like" application is ZohoShow.com
http://zohoshow.com/login.sas
What is Zoho Show?
Zoho Show is an online tool to create, edit, publish, and *show
presentations*.
It's web-based. So, you don't need to download or install anything. All
you need is a browser (Firefox 1.0 + or IE 6.0+ or Mozilla) and internet
connection.
Key Benefits
1. *Access from anywhere*
Access, import, and edit presentations from anywhere.
2. *Load your existing presentations*
Import Microsoft PowerPoint(.ppt, .pps) or OpenOffice
Presentation(.sxi).
3. *Simple, easy to build and edit *
Build and edit presentations on-the-fly using WYSIWYG editor.
4. *Remote presentations*
Zoho Show helps giving remote presentations with complete control
for the presenter. The presenter can see the participants in the
presentation.
5. *Flickr integration*
Pull publicly shared images from your Flickr account into your
presentation
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