It's basically a wiki but running locally that you can sync with a remote, and based around normal (well, almost "normal") markdown files.

It's trying to be a wiki without a server. Or at least, that's how it started. It's a note taking app that uses markdown and plain text files. Gives some nice organizational views.

That requires setting up a server, which filters out 99% of the population.

I used TiddlyWiki for a while, but it was too fiddly. E.g. saving to google drive was a hack. Obsidian, at a very low price, gives me a reliable app -- Tiddly wiki, running within the browser, often got slow when I had a few hundred diary entries.

I’d start with the plugins. It allows for easy integration into my current workflow.