I once wrote about PrezentIt, a very nice online presentation software. Now, I found Preezo, a similar online application to create professional quality presentations using an ultra-fast Ajax user interface.

With Prezzo is very easy to collaborate with your team on a centralized web document, as also share your documents with partners, customers and other users. Of course, in order to use it, you have to register.
 This application in very new, it was launched some days ago. Even if it’s not much complete and functional as PrezentIt, I saw lot of potential in this new tool.