If you're looking at reveal.js, and you like ruby, check out reveal-ck: https://github.com/jedcn/reveal-ck. Write your slides in slim, haml, or ruby itself. Example of how to do everything in reveal.js but in slim here: https://github.com/jedcn/reveal-ck-template. General introduction in the README, more info here: http://jedcn.com/posts/reveal-ck.