Instead of relying on “startups” you could go for (selfhosted) Nextcloud with the notes app.
Not everyone has the infrastructure, budget, interest, and/or experience for self hosting.
I personally use obsidian synced using GitHub. It breaks way too often with file conflicts but when it works it just works. If you do the thing and you do it right and you don’t fuck it up, it works! It just works!
I would gladly pay for obsidian sync if it weren’t so outrageously expensive.
Might I suggest using syncthing instead? Never broke once for me and have been using it for years. Not had a conflicts either, as you can choose wether that happens or not in syncthing.
I recently discovered Obsidian - I use sync.com (free) and save my obsidian vault on my shared sync drive. Works like a charm, I can have it open on multiple devices.
Or etherpad hosters
Joplin is probably less overhead than nextcloud if you’re just talking about notes.
$5 a month on Linode and it takes <60 minutes all in if you familiarize yourself with Docker. This is the way.
Better yet, spin up a secondary container with OnlyOffice and you get something more compatible with Office365 than even Google has.
Without any login needed ?
Ok