Obsidian is pretty damn good.

Seems to not be FOSS 😔

Oh dang I thought the source code was public.

It seems to me like they attempt to appear that way, the have a lot of their docs and stuff on github and link to it from their main site, but the actual application code is not there

Yeah looks like they have a plugin API and a private codebase.

Doesn't do any of the last bullet point but Zim works well for this, usable on Android w markor. Turtl also worth a look

Hey, I might be able to help you here. I write all my notes in markdown, so it stays readable on any device and platform. On Linux and Windows there is VNote which is open-source https://github.com/vnotex/vnote. On Android - also open source - you can use Markor. Very simple and effective for small touch devices (I have even used it on E-Readers). VNote has the advantage of opening a large amount of tabs from multiple notebooks, on multiple workspaces, all helping you stay organized. It also holds advanced features such as regex-search. Over time, I also customized it with keyboard shortcuts for global search and tab navigation so it feels more like a browser. It does some Markdown rendering while you type (text size, color), as well as it offers a built-in html viewer, applying latex formulas etc. all at the press of a button.

Yes Markor is awesome, I also have used Zim in the past.

I don't use note taking apps very much, but if you haven't chosen one yet, take a look on this one

Notesnook by Streetwriters LLC

Notesnook | Open source & zero knowledge private note taking app

Express yourself with freedom, no spying, no tracking — only private notes. Unlike Evernote and other note apps, your data is private — not ope...