I write lectures for university in org-mode. The PDF export (org -> LaTeX -> PDF) with org-beamer and a theme makes it a nice looking presentation. I can check into Git, can copy and paste layouts, have a great search and don't have to leave the keyboard (which over time has actually become quite a big deal for me).
Just wished Preview would show thumbnails in the TouchBar.
For those uninterested in getting into a LaTeX presentation tool, there's also a package [1] supporting export from org-mode to Reveal.js presentations. I've found it to work quite well, and to be much more convenient than any more GUI-focused tool.
Just wished Preview would show thumbnails in the TouchBar.