emanote VS pandoc-sidenote

Im personally using Emanote which does exactly what you describe. It supports LaTeX and lots of other features via Pandoc. Its also very nice to use in that it supports hot-reloading, instead of requiring manual refreshing. The only downside for some might be that its installed via the Nix ecosystem which is (great but) a bit of a rabbit hole you might not want to deal with, particularly depending on your level of technicality on the computer.

Have you considered neuron or it's successor emanote?

Emanote! Very lightweight. One of the things I can't stand about Notion is its speed.

Also, I'm willing to mentor anyone who is interested in improving Ema or Emanote.

Clarification: Emanote is a successor to Neuron, and written on top of Ema.

I use obsidian (previously just vim) and emanote (previously neuron) to compile some (but not all) of my notes to a static site.

I maintain an extended version of Emanote in Haskell (as an Ema app) that does custom stuff like visualize my hledger transactions, track time, generate invoice and provide custom views of my Markdown notebook, like a Twitter-like timeline generated from H2 headings (with date) from across notes.

I can’t imagine the intended audience being so wide as to include a goal of “replacing Markdown as the default on GitHub.”

Instead, this project appeals to me as someone who’s already “bought in” to the pandoc ecosystem. Pandoc makes it really easy to write filters[1] and to take the same source file to generate web pages[2], Reveal.js presentations, Beamer presentations, and long-form PDFs[3]. As someone who writes most things in Markdown compiled via pandoc, I see the cracks in the edges all too often, but I’m too stubborn to give up markdown or any of the tools I’ve built up around pandoc and pandoc markdown. I could absolutely see there come a day where I find some last straw where I can’t get done with pandoc Markdown what I need to get done, and djot seems like it would at least be a contender. I’m sure there are many pundits here would chime in and say “just use Asciidoc,” but every time I look at a syntax quick reference, I get about halfway down the page before thinking “nah, this looks too foreign, I don’t want something that diverges this far from Markdown.”

Djot deviates in annoying ways from Markdown, but not as many and so it’d be an easier pill to swallow for the narrow audience of people like me who want something mostly similar to Markdown that works well with pandoc and avoids the most common syntactic oddities of Markdown.

[1] https://github.com/jez/pandoc-sidenote

[2] https://github.com/jez/pandoc-markdown-css-theme

[3] https://github.com/jez/pandoc-starter