The title is still a work in progress.
We need a wiki that is powered by org-mode documents on disk or in a git repository.
Org-mode offers a lot of power over Markdown and thus is a more desirable format. One example is org-babel.
We want to invite authors who are less-technical than software engineers. As such, the git management should be fairly streamlined if at all possible. Initial iterations will not cover this though, and will defer to other systems.