[Tomte]

I will always recommend Dokuwiki, if only for the extremely low administration effort needed.

If your users insist on shiny UI, you will look elsewhere, but it's my first recommendation if the number of users doesn't get too high and you don't need all kinds of integrations into other Enterprise tools.

[mekster]

Has been the case for me to use DokuWiki for maybe 10 years but switched to Wiki.js in 30 minutes after I figured how powerful it is. (You need to install an instance yourself to see the admin side of the interface)

DokuWiki is good but it is aging. Wiki.js has user authentication against nearly 10 sources including LDAP, has WYSIWYG editor as well and access control for pages as well as easy to use interface to modify the menu list.

It also has automatic backup to many remote storage types and I'm just impressed how it has all I wanted but was hard to accomplish efficiently with DokuWiki and its plugins like having a working WYSIWYG editor.

And all are built-in and works as intended unlike third party plugins which might turn out buggy.