"A flowgram combines the advantages of slide presentations and screencasts with an interactive user experience that fully exploits the fact that almost all the information we might ever need is already on the web.
Using the zero download Flowgram Maker, creators can assemble and annotate web pages, photographs, videos etc on any topic, and add a voice narrative which provides context, emotion and consistency. This uniquely personalized package can be shared as an embeddable widget, email or as a link to either a private group or with the world. Flowgram recipients can interact with any of its pages by, for example, clicking on links, and playing and pausing videos."
You can check out Flowgram by clicking here.
You can see all of the powerpoint tools here.