Wu-LeeHubzilla seems to do so many things, I wonder why social.coop don't use it? It has forums, blogs, wikis, calendars, events, chatrooms... and it federates.
Jonkman Microblog is a social network, courtesy of SOBAC Microcomputer Services. It runs on GNU social, version 1.2.0-beta5, available under the GNU Affero General Public License.
All Jonkman Microblog content and data are available under the Creative Commons Attribution 3.0 license.