I wrote a post a while ago comparing various wiki and wiki-adjacent offerings. I’ve settled on DokuWiki as it’s easy to host. The UI is dated (though I don’t think it’s outright ugly). The vanilla experience is a bit bare-bones but there’s a built-in GUI for searching and installing plugins. The only paint point I can foresee is upgrading and long-term management thanks to juggling so many plugins. If the newest version of the base software doesn’t play nice with a particular plugin, or if a plugin stops being developed, etc.