I have never used wiki software before. But, some HN users recommend to use Zim [0]. They shared their experience with Zim on this thread [1]. One of the example is here [2]. Hopefully, it can be a reference for you.
> Confluence are very heavy weight and slow. Also, it's a pain to create pages when you need to tab back and forth to copy text and pictures.
I can confirm that since I use Confluence at work.