
Extract the answer to the question from the following context.
Question: What would you need if you wanted to use iTunes software and its features?
Context: Apple's iTunes software (and other alternative software) can be used to transfer music, photos, videos, games, contact information, e-mail settings, Web bookmarks, and calendars, to the devices supporting these features from computers using certain versions of Apple Macintosh and Microsoft Windows operating systems.

computers using certain versions of Apple Macintosh and Microsoft Windows operating systems
