Slyde is a basic presentation tool using web technologies. I created it in 2011 for a presentation of the "Shiny New Toys" of web development, which then meant CSS3 and HTML5. Of course I created Slyde using these shiny new toys.
For an introduction, see https://gweax.github.io/Slyde/
For an example see https://gweax.de/talks/semantic-html/