- CommunityWiki — an original multilingual community wiki 'jam site', powered by Oddmuse, now invitation-only;
- Community Wiki (Rosemart.org) — a former project to help parents and professionals deal with disabled and/or troubled children;
- Pentaho Community Wiki — the original wiki for Pentaho, powered by Confluence from Atlassian;
- Wiki community — WikiIndex article page about a network of co-operating wikis on related subjects; to help promote membership and co-operation between wikis;
- Wikia Community Central — a series of forums in many different languages for discussing all aspects of Wikia;
- Wikia Community Communication — the Community Communication Project was an attempt to find better ways for communities to interact, to share information, to communicate.