I built a few scripts for myself to deal with notes of many kinds, and I tried TheBrain and others, but I think this is the way.
As a student, I find it super wasteful to take notes and get them to be stagnant or worse in the other book later on but here I can continue to expand the network.
With this tool, you can always expand, re-edit, and add connections to concepts. It is tremendous.
You may be a bit put off by the text interface, but it is super powerful and; in contrast to say Evernote, the formatting is done elsewhere and you don’t have to fight the tools intentions.
The “your data is on your machine” is a huge plus for me, should obsidian no longer be available for some reason, my data is still in a standard format that is easy to use.
There is an Anki script that will likely be available as an Anki Plugin, and there is NeuraCache also.
The mermaid integration is awesome too, for quick graphs and stuff.
I am waiting for the .bib integration for paper citations so that (@miller93) will put in the full and correct citation for you.
Hope this helps a bit.