I often use [[reveal.js]] for presentations.
I use the `+present` flag in my [[Doom Emacs]] configuration. It enables integration with [[reveal.js]], beamer and org-tree-slide, so Emacs can be used for presentations. It automatically downloads [reveal.js](https://github.com/hakimel/reveal.js). The [[reveal.js]] implementation uses [`org-re-reveal`](https://gitlab.com/oer/org-re-reveal).
[[Obsidian]] also supports presentation by putting `---` between content.
To view slides, you'll need to enable the "Slides" plugin.
This can be done through the Settings => Core plugins.
---
Here is a slide.
---
Here is another slide.
---
It's nice in a pinch, but `+present` is more powerful.