Anno-J does not require you to download anything in order to use it.
So why did I include a download link? Because people always ask, "where do I download it?". Anno-J is a REST-based web application. All the components of it exist out there, on the net, hosted by remote providers. All you do is create a simple html page that configures the way in which the remote assets are brought together.
But if you really want to get a copy of the source code to run on your local server, you can get the latest version here.