Intellipedia

Intellipedia is a wiki-based encyclopedia created by the United States Central Intelligence Agency for use within the U.S. intelligence communities. As of September, 2006, it contained approximately 5,000 articles, including on the areas, people and issues of interest to those communities. It also contains meeting notes and other items of internal, administrative interest. Anyone with access to read it has permission to create and edit articles. It is not accessible to the public.

Intellipedia uses Mediawiki software, the same software Wikipedia uses.