Feeblepoint
Feeblepoint is deprecated but it’s here for nostalgia. For my own purposes, I ended up using feeblepoint2 instead, which is a single-page HTML file with jumps between slides, and pointing/highlighting for online presentations.
Need to give a quick presentation?
If you're comfortable with basic HTML, feeblepoint might help. It’s just a wee bit of JavaScript+CSS that throws a series of pages up on the screen.
Credit: all photos in demo by Penny Maycock (creative commons BY-NC).
Powerpoint is nearly always used for the convenience of the presenter, not the people at whom their presentation is being fired. We can do better than that. Up with FeeblePoint and things like it!