Apple is a leading technology company headquartered in Cupertino, California. It designs, develops and sells consumer electronics, computer software, and personal computers. Its major hardware products include the Mac, iPod, iPhone and iPad. Apple also develops operating systems such as Mac OS X and iOS, as well as software like iTunes and Safari. Apple has substantial annual revenue of $156.5 billion and is the largest publicly traded company in the US. It is committed to environmental protection and has a strong focus on corporate social responsibility through philanthropic donations.