I recently came across the Shower slide generator, which generates nice HTML-based presentations.

Since I’m quite fond of S9, I built a template pack to deploy an S9 presentation using shower. You can grab it from my Github home: slideshow shower

Some of main advantages of S9 include: slides are written in textile (or markdown); the presentation can be easily deployed on the Internet.

To see it in action, have a look at if-then planning, which describes a personal productivity technique.