It's not exactly like logseq but I really like SilverBullet (https://silverbullet.md/). It's self-hostable and really hackable (plugins, dynamic categorization via embedding custom queries, etc.). Browsers are the first class platform. I really dislike how logseq/Obsidian etc. try to push you towards local fat clients or web clients that only use browser local storage. I _want_ everything stored on a central server so I can just pick up on any device without having to sync.

Same. And it's been fascinating to watch the genuine gap between people in our camp and people who really, really want "local-first" (which, to me, translates to inconvenience and otherwise unnecessary sync requirements).