Hugo, Joomla/Wordpress, anything else?
In your experience, what is the software stack that has worked best for you to maintain an easy, effective, yet flexible developer documentation?
https://www.gitbook.com/ Is one of the good solutions I have been using for developer documentation. They have a freemium which allows you to use custom domain names.
Me and a few colleagues have launched Archbee version 3.0. An amazing documentation tool.
Internal and customer facing documentation! You should check this out!