Federated Wiki is a complete rethink of wiki from its inventor, Ward Cunningham. He felt that the build out of wiki had never quite enabled the character of collaboration he had hoped for, and set out to build anew.
https://s3-us-west-2.amazonaws.com/osbridge/audio/2012/June+27/B302-303/osb2012-0773_100_New_Wikis_Just_For_Yourself.mp3
Why You Need to Host 100 New Wikis Just for Yourself. Ward Cunningham speaking at opensourcebridge.org 
In federated wiki, your pages are your own, and can be shared or private; if shared, they can be forked, sections copied across by other users. Your status as a collaborator is 'remembered' through all versions. A wide variety of transporters have been built to enable use of varied media.
At the holo-hack in Barcelona, a parallel project named fractalWiki was hatched. The similarities were noted, and the applicability of holochain's 'agent-centric' mode and distributed processing was obvious.
Federated Wiki sites share pages circulating within a creative commons. Here we take a look at the: - Future of the Federation - Future of Fedwiki Software.
A community of open-source developers maintain both the client-side and server-side applications - github
# CoffeeScript implementation
Currently federated wiki software as a Node.js package ready to run on a variety of platforms. This is usefully run on a personal laptop or an industrial server in the cloud. The server software supports a multi-tenant "farm" option useful for small groups or heavy users. npm
Federated Wiki sites share pages circulating within a creative commons. A single-page browser application can read from many sites at once and save changes in that browser. Users who host their own sites can login there to have their edits shared back to the federation as they edit.
# History
Ward Shows the Awesome Flexibility of Narrow Pages
Ward Cunningham started the federation in 2011 with a workshop project called Smallest Federated Wiki or simply SFW. The data visualization and sharing mechanisms were supported by Nike's Sustainable Business and Innovation group. Early history has been documented in a series of video screencasts.
# See also
A community of open-source developers maintain both the client-side and server-side applications - github