Daux.io is super simple to set up and use. If anything, its singular dedication to purpose is also its downfall, limiting flexibility overall. If you're amenable, any number of so-called 'flat file' CMS systems are equally capable and simple, without the obvious tradeoffs.
However, if easy is your game, Daux.io will get your documentation live and looking nice in no-time. Review collected by and hosted on G2.com.
As I touched on in the 'pro' section, Daux.io's greatest strength is also limitation, depending on your use case. Daux.io does a nice job in its core capacity, but doesn't excel in any other uses. Review collected by and hosted on G2.com.