No. 18: Intel Foundation

Total given: $35.9 million (2008)

The Intel Foundation's U.S. efforts focus on science, technology, engineering, and math through efforts such as the Intel International Science & Engineering Fair and the Intel Science Talent Search, organized with partner group the Society for Science & the Public. It funds organizations in these areas such as the National Science Teachers Assn. It is a large donor to United Way through a matching program and also works with various local organizations on disaster relief.