Obsidian says that it’s “100% User Supported” which, when I think about it, isn’t a big claim, that’s also the case for Google and McDonalds

Right now, if you compile notes in a tree-style “knowledge base” format, Obsidian is the best tool - this is best for dungeon mastering and documents.

If you compile notes in a feed - just a huge stream of searchable notes, one at a time - you’re spoiled for choice, with Evernote, Standard Notes, and Joplin as good options.

I use both!