I'd like to mention the tool I use: Slidify[1,2]

Basically HTML5 slides from R Markdown. Interactivity also available. [3,4]

Perhaps not was WYSIWYG as 2sli.de, which looks quite nice, but Slidify is great if you know R and want to include code snippets too.

[1] http://slidify.github.io/ [2] http://slidify.org/samples/intro/#1 [3] https://github.com/slidify/interactive [4] http://slidify.github.io/dcmeetup/demos/interactive/