I used it for a while and right up to the point I actually set it up to give it a go, I'd never even heard of it before. Definitely feels like it flies under the radar.

I loved the idea behind it, but a few points ended up sticking out so I ended up dropping it at some point. Namely, I didn't like the markdown editor much, plus it was very awkward to use on mobile (which, granted, is an issue with most competitors). I also don't like how it's dabatase based, vastly prefer using local markdown files. Plus, it's more of a personal thing but I came to prefer graph based implementations better than hierarchical ones. Still, really impressive project and I very much appreciate that it's open source and fully self hostable, not much in the way of competition there when it comes to second brain alternatives.

After exploring a few options, I've ended up on Logseq. Shame that one isn't self hostable, not fully anyway, since last I checked you still need to open a local folder even if you do host it yourself.

Sweet, definitely not a type of implementation I'd expect on top of the fediverse so that makes it even cooler!
Looks super well thought out, especially love the robust import feature and federated book metadata. I'll have to check it out sometime soon.

Just checked and was able to get it to install on my end, OP might have updated it in the meantime.