Thanks for the list especially TagSpaces – had not seen that one before and seems very powerful.
Here are two lists of alternatives on product hunt, which offer some other choices to consider as well.
What's the best app for writing on the Mac? - I need something for taking notes and putting together blog posts.www.producthunt.com
What alternative to Evernote do you use and can recommend? - Okey, we all know Evernote - it is love/hate relationship.…www.producthunt.com
Personally I just use Apple Notes but collaboration is broken on it 😡!