[nexxer]

I set up an OpenGoo (now FengOffice) instance internally where I work many years ago. We use it to store Notes, categorized in Projects and Subprojects. The interface makes it easy enough for non-technical people to use it and search works well enough. There are also custom fields we've added to Notes, to make up checkboxes and dropdowns.

It's still our main point of truth for a lot of processes and details, though we've been considering moving to Phabricator which we're using for our code.