Obsidian

I've used Obsidian for a couple years. It's a very good note-taking app. Vault (a paid add-on) makes syncing across devices effortless, but other cloud solutions also work. Composing in markdown's fast: your hands never leave the keyboard. It stores notes in markdown, so there's no lock-in: you can open them in a text editor. Once a note is synced to your device, you can reliably get to it even when you're offline. Quirks are in tables (a bit clunky) and the outline (hard to find on phones).

Just started using this for a worldbuilding project, and I'm a little addicted to the Wikipedia style linking and the filepath display. Sometimes getting links to work is a little frustrating, and I don't quite understand how to use aliases correctly, but I think those are mostly me problems (or mobile problems, cause this probably works so much better and cleaner on a computer). I do want a way to quickly find empty files, cause I've left a bunch of them lying around.

This is the perfect note-taker for developers! Great for students too! I don't have to save anything to my storage, for extra security! Nothing I can say i don't like. but might I suggest: (1) Being able to put passwords on your notes. (2)The ability to create small, but entire, directories within a note! Then put a password the dir—another on the note 😈🔐 I Definitely recommend, seeing that it needs almost zero permissions.