The Wikimedia Foundation is the nonprofit organization that operates Wikipedia and other Wikimedia free knowledge projects. Its vision is a world in which every single human can freely share in the sum of all knowledge. The Foundation hosts Wikipedia and the Wikimedia projects; builds software experiences for reading, contributing, and sharing Wikimedia content; supports the volunteer communities and partners who make Wikimedia projects possible. The Wikimedia Foundation is a United States 501(c)(3) tax-exempt organization with offices in San Francisco, California, USA.Wikimedia UK is the national charity for the global Wikimedia movement, bringing together practical and policy expertise about Wikipedia and the other Wikimedia projects. Our mission is to enable people in the UK to engage with open knowledge and access reliable information in order to develop their understanding of the world, and make informed decisions about issues that affect them. Every year, the content shared with the Wikimedia projects through our partnership programmes receives billions of views, and we reach thousands of people directly through our education, outreach and advocacy activities.