The extremely wealthy founders have started Google.org as the philanthropic arm of Google, focusing on: "Poverty alleviation, energy and the environment." Early projects include the Acumen Fund and Technoserve (promoting entrepreneurialship in Ghana), and water research in Kenya.
Google has already donated $33M to 850 non-profit charities in 10 countries. Google is also a sponsor in MIT's effort to bring $100 laptops to 15 million children in Brazil, China, Egypt, South Africa and Thailand. For our thoughts on this, see Global Implications of the $50 PC.