An AdminCP (Administrator Control Panel) are mostly used on Database Driven sites, like Forum Hosts (e.g InvisionFree, Invision Power Board and phpBB) and contain features that only an Administrator, can use. It usally contains features that change the look of the forum and other features that Administrator does not want members to use. InvisionFrees Logo InvisionFree (also known as IF) is a free forum hosting company. ... Invision Power Board (abbreviated IPB or IP.Board) is an Internet forum software produced by Invision Power Services, Inc. ... The correct title of this article is phpBB. The initial letter is capitalized due to technical restrictions. ...

For example, on the PhpBB AdminCP, the Administrator can add a forum, a category, manage users (deleting, renaming, and changing their info).

AdminCPs are usually used to make high level changes to the site that the AdminCP belongs to.