As part of a much larger open source collective intelligence platform, an IBIS extension has been created for MediaWiki. The development website for it is found here
. What you can navigate at this time starts from an index of conversations. Each conversation has its own home page with an explanation (motivation) for the conversation followed by any responses, which, typically, are issues raised. That format is similar to Debategraph. Each node in the conversation is its own wiki page.
Ongoing work is evolving navigation and participation widgets that will allow one to get a visual image of a conversation from which one might see the gestalt
of the conversation, which is a more difficult event when the conversation is chunked over a range of pages.
The overall project is called Bloomer
. Bloomer is a collection of sub-projects, including a topic map, a version of KMi's Cohere, and MediaWiki extensions.