Does it not work for btsync? Just curious why you would mention Dropbox and drive when they have the same privacy concerns. Or are you wanting to move away from ever note for another reason?
Edit: tagspaces page says it works with bts.
Edit: tagspaces page says it works with bts.
The main reason why I don't want to use Evernote is because I want to store my notes in plain text files, so I can keep using them even in say 50 years.