I'd argue this is not being offered by other wiki. I know at least of one where real-time collaboration works like a charm: https://github.com/outline/outline

With a real-time collaboration, would it also be possible to highlight the edited content since the user was last editing the page?

When do we expect to have this feature?

The "text"-app of https://nextcloud.com/ uses https://tiptap.dev as realtime collaborative editor and is from my personal experience one of the most stable implementations of these kind of editors. tiptap itself is based on https://prosemirror.net.

Seeing that the plan is to support Quill as the new standard Visual Editor how about giving us some form of config access to configure a yjs instance https://docs.yjs.dev/ecosystem/editor-bindings/quill

Hedgedoc has a great implementation of multi-user, collaborative markdown. It's the best I've seen.

This is a cool idea. We currently collaborate in a CodiMD document and paste it into wikijs afterwards. Both editors do look alike and work the same way so this works fine for us.

Potential implementation suggestion: Have the user give a url for their own etherpad instance in the config.

Etherpad already rocks at collaborative editing and can have arbitrary page urls. So, wikijs can embed the full path of the current page there, like so:

https://etherpad.wikimedia.org/p/test%2Fexample.md (test/example.md)

Now, whenever someone clicks on <edit>, we open this page in a new tab instead of the in built editor preloaded with the page's content:

Next, we periodically, or when a user gets back to wikijs, refresh the page from the etherpad link.

Since both of these are self-hosteable and open source, it _might_ even be possible to ship etherpad with wikijs.

It would be a good add for sure, logseq has this