As limited as OneNote is, I find it the place I keep returning to. Obsidian was extremely off-putting to me when I last tried it out, as the node parents themselves could not be documents. Or I couldn't figure out how to use them that way! Maybe it's just me!

Beyond that, I have a fondness for wikis that permit breadcrumbs from excerpts back to a main documents. Giving the right information in the right place, with a centralized main resource that is carved up. This strategy is super useful to prevent dead instruction sprawl.

I once read (in someone else's wiki) that all documentation is a memorial to some time in the past. That really stuck with me for years now. When you hit "save" it's already in a state of decay.

I am talking about sharing of information and maintenance of knowledge stores though, and that perhaps is a different beast than cataloging ones own interests.