From 2009 to 2011 Tyacke was Chair of the Mount Everest Foundation, a non-profit-making humanitarian and development organisation active in Nepal.
National Science Foundation | Mount Everest | Ford Foundation | Rockefeller Foundation | Mount Vernon | Mount Kilimanjaro | John Simon Guggenheim Memorial Foundation | Electronic Frontier Foundation | Bill & Melinda Gates Foundation | Mount Pleasant | Mount Lebanon | Mount Athos | New York Foundation for the Arts | Mount Olympus | Temple Mount | Mozilla Foundation | Mount Fuji | Guggenheim Foundation | Mount Rainier | Alexander von Humboldt Foundation | Mount Celestia | Andrew W. Mellon Foundation | Wikimedia Foundation | Mount Shasta | Mount Kupe | Mount Hood | Mount Holyoke College | Apache Software Foundation | Mount St. Helens | Mount Sinai Hospital |