There are a ton of options listed on the Awesome Selfhosted list. I’m on the search for a FOSS option that I can use to document my homelab and personal tech projects.
Right now, I’m leaning towards wiki.js
Edit: similar question
DokuWiki for simplicity. Everything is a text file that can just be copied to a web server. It doesn’t even require a database. And since all the wiki pages are plaintext markdown files, they can still be easily accessed and read even when the server is down. This is great and why I use DokuWiki for my server documentation as well.
Bookstack is really nice and user friendly. It’s probably one of my favorites.
Dokuwiki is simple and stores files in plaintext.
I haven’t used wiki.js much but I’ve heard good things about it too.
Another option if you don’t need to share the wiki with anyone would be a note tool like Trilium. It has built in support for stuff like mermaid or excalidraw diagrams.
Don’t forget to setup backups for whatever wiki you do go with, and make sure you can restore them when your wiki is broken ;)
I did a similar inquiry a few months ago. I tried DocuWiki and Wiki.js. Ended up with Wiki.js. It’s very easy to setup with docker-compose. Everything is stored in Postgres but it also exports to the local filesystem in Markdown. Its advanced built-in search is pretty good.
