Over on Blender Artists, Peetie started a list of add-ons that are confirmed to work in Blender 2.8. The topic is a wiki so you can contribute to it.
For addon developers, would you list your addon here at the moment the addon is working in 2.8? This way we have an overview of addons working with 2.8. You are able to edit this first post, so the list in this post. Thanks in advance and happy coding