The foundation is set up as a 501(c)(3) and to the benefit of the public. While it is not the only open-source project foundation working like that, many others

The foundation is set up as a 501(c)(3) and to the benefit of the public. While it is not the only open-source project foundation working like that, many others are 501(c)(6)'s and primarily for the benefit of their (most often corporate) sponsors.