Zom.bi
Zom.bi is a wiki website which also hosts some other services (which they are very good at integrating), notably a Mumble server. The Zom.bi wiki is infamously worse than the Extremely Corporate wiki.
Propaganda
According to their website:
Zombi is a small community with about 25 members, who are mostly from Germany and Austria, but also include people from other parts of Europe and North America. Our community is rather dynamic: People from all over the world occasionaly find their way to our Mumble server or into our XMPP group chat, and decide to stay. We get to know a lot of interesting people. Of course the topics don’t have to be technical. Often we discuss cultural differences, current events or talk about anything and everything. New friendships are formed and are strengthened, sometimes even by exchanging sweets and delicacies.
This information should be taken with a grain of salt, as the Germans are famous for their propaganda.