Sort of a Deckset clone, built upon Reveal.js and Pandoc
Slidown should allow to do everything you can do with Reveal.js, with an interface inspired to Deckset.
Conversions from Markdown to Reveal.js are made with Pandoc.
Still not released, but you can start it from source.
First of all, ensure to have Python 3, Qt5, PyQt5 and Pandoc (sorry, does not work with Pandoc 2, required version: 1.19) installed. Then:
git clone https://github.com/riccardomarotti/slidown.git
cd slidown
make git-init
make init
make start
Here's a little preview: