Our team uses Cloudron to host all our internal apps and data, and they offer a number of wiki / forum type of services. We settled on MediaWiki (e.g. Wikipedia Open Source) since it was familiar to everyone. https://www.cloudron.io/store/index.html https://www.cloudron.io/store/org.mediawiki.www.cloudronapp....

Hmm -- the OP asked for a self-hosted WIKI. Looking at the link you posted it seems to be a hosting service for WIKIs or am I missing something?

And I went on and posted a comment doing the same. Getting started fast weighs sometimes more.

I really like tiddlywiki, especially since you can take offline self contained snapshots, and it is sooo customizable you can become “converted” to its way of doing things.

There has long since been server versions, and recently they released a new and improved service version which takes aim at your needs.

https://mws.tiddlywiki.com/

If you're a developer, you might start by using a static site generator and GitHub Pages. Stick to Markdown and start collecting and writing stuff. Sooner or later you'll get comments and regular readers. Then you might start to add editing or simply give other people access to GitHub. The editing experience of Markdown files in GitHub is not too bad and you get started in no time.

From my experience it's more often not the tools but the content.

For comments you could use https://giscus.app which integrates very nicely with GitHub.

Doing so you have *no* setup costs.

I'm aware that this is not exactly *self hosted* -- but it has the advantage that you have no upfront cost. And most of the static site generators are just that, you could host the output on any 5$ web server.