The Wikimedia Foundation is a philanthropic, non-profit organization dedicated to encouraging the production, development, and distribution of free and multilingual content and to making these wiki-based projects fully available to the public in a completely free manner. The Wikimedia Foundation operates some of the largest collaboratively edited reference projects in the world, including Wikipedia, one of the 10 most visited websites in the world. It is headquartered in San Francisco, United States (until 2007 its headquarters were in the state of Florida). Its existence was officially announced by the former president of Bomis and co-founder of Wikipedia, Jimmy Wales, on June 20, 2003. It also has local chapters that represent it locally. Its name is composed of the words Wiki and media.