Adobe Systems Incorporated is an American multinational computer software company. The company is headquartered in San Jose, California, United States. Adobe has historically focused upon the creation of multimedia and creativity software products, with a more recent foray towards rich Internet application software development. It is best known for Photoshop, an image editing software, Acrobat Reader, the Portable Document Format (PDF) and Adobe Creative Suite, as well as its successor Adobe Creative Cloud. It was founded in December 1982.