I similarly am obsessed with maintaining my own knowledgebase and wanted it to be self hosted and open source. I was looking at setting up a wiki and considere

I similarly am obsessed with maintaining my own knowledgebase and wanted it to be self hosted and open source. I was looking at setting up a wiki and considered Dokuwiki and Bookstack. I ended up using Tiddlywiki, which is by default a single user wiki that is actually just a single HTML file that defines the whole app and the wiki contents. This means that all you need to run it is a browser that can read HTML and run JS. I since migrated from running it as a single HTML file to a Node.js server to enable better version tracking with Git and to make saving updates less cumbersome. It's a little wonky to save updates to the single-file version without a custom browser plugin or app. Anyways, at some point I might try migrating to a more traditional wiki solution as I like the idea of being able to share parts of my wiki with others. But for now Tiddlywiki works nicely for me!