If folks like this kind of thing, I discovered https://bento.page/ from a HN post and have been using it off and on for the past few months. It has a much larger featureset but is specifically focused on presentations (for now!). Unlike this project, the editor and content embed themselves in an html file, so you aren't dependent on the host site existing to serve the editor.
There’s also https://github.com/nathanvy/singlebook which looks like the same philosophy but for documents.
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> https://bento.page/
Maybe I'm a 2026 luddite but I can't bring myself to read about let alone try using products whose landing page is such a cookie cutter AI design. At least put some effort in to sand off the horrible unnecessary gloss and choose different fonts, colour schemes and layouts from every other project.
I am gradually becoming resigned to the fact that I'll have to get over this prejudice, though I'm not sure how I will.