Zoho Show is an online tool to create, edit, publish, and show presentations. You can import Microsoft PowerPoint (.ppt, .pps) or OpenOffice Presentation (.sxi). Zoho Show allows you to edit presentations on-the-fly using a simple WYSIWYG editor. You can also choose publicly shared images from your Flickr account into your presentation. Zoho Show enables to perform remote presentations with complete control for the presenter. The presenter can see the participants in the presentation. Zoho Show is completely web-based, so you don't need to download or install anything. All you need is a browser (either Firefox or Internet Explorer) and internet connection.
The presentation can be shared with everyone and any viewer can follow the presenter or take control of the presentation. The preview includes a group chat feature based on Google Talk's gadget that shows the active collaborators and viewers. If all the viewers click on "View presentation", they can watch the presentation at the same time.
Create beautiful presentations, access them from anywhere, and share them with the world. With 280 Slides, there's no software to download and nothing to pay for – and when you're done building your presentation you can share it any way you like.
SlideRocket is a web application that provides everything you need to design professional quality presentations, manage and share libraries of slides and assets, and to deliver presentations in person or remotely over the web.
SlideShare is the world's largest community for sharing presentations on the web. You can upload your presentations (ppt, pdf, pps, pot, odp, keynote) and share with others, find/download interesting presentations, embed them into blogs or websites, create a slidecast by linking your slides with audio
Use Flypaper to create Flash-quality content, including: interactive presentations that play on a local computer or directly on the Web, interactive brochures that sell on the Web, engaging online training courses, videos for YouTube or your Web site, cool content for your blog or social networking profile
OnlinePRESENTER was created to be the easiest and most cost effective way to present your PowerPoint over the web to anyone, anywhere in the world. It is ideal for a wide range of applications, such as meetings, remote product and service demonstrations, training and distance learning, to name just a few. OnlinePRESENTER is not usage based. You pay one low annual fee for as many presentations as you'd like to give. Cost: $299 per year
authorSTREAM is the site that allows to send PowerPoint Presentations straight to YouTube, iPod, blog and share PowerPoint Presentation with a selected group of people in real time.