Jekyll-presentation is a project mainly written in Ruby, it's free.
OK.rb presentation over Jekyll
This is the Jekyll presentation for OK.rb. It uses ShowOff. To view it, you need to install showoff and then run it from this directory.
$ gem install showoff
$ git clone git://github.com/bratta/jekyll-presentation.git
$ cd jekyll-presentation
$ showoffThen you shold be able to go to http://localhost:9090 to view the presentation
Or just head to http://okrb-jekyll.heroku.com