Forum OpenACS Q&A: S5
A single-file standard data format for an entire slide presentation is also a very good thing, but on cursory inspection, the markup looks fairly complicated. Doing the whole thing in Emacs is probably doable, but most people aren't going to want that. Some sort of simple UI like WimpyPoint is probably very necessary.
I'm sure that OpenACS can do a better job, not because of the technology but because of the quality of its developers. S5presents has to following issues:
* New slides are not added at the end of the list.
* Markup (either markdown or HTML) is not parsed correctly. Experiment and you'll see.
The end result however out shines Wimpy Point.
But it was a poor implementation and did not work with IE (mozilla-firefox works well) so i did not go so far.