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"iTunes - Apple"
Apple’s iTunes is one of the most widely recognized digital library software in the planet, which is able to find, download, and organize your collection of audio files, and works with iOS devices such as the iPod, iPod Touch, iPhone, and the iPad. First introduced by Apple in 2001 (although first developed in 2000, and only renamed as “iTunes” when the software and its developers were acquired by Apple), it is also capable of acting as a full-fledged media player similar to Microsoft’s Windows Media Player or Nullsoft’s Winamp, and comes capable of playback with various file formats out of the box, especially of Quicktime media, and supports visualizations as well.
iTunes is proprietary freeware, meaning that it is free to download, but its source code is wholly owned by Apple and cannot be given to third party developers unless they’re for SDKs (software development kits) for addons and extensions. iTunes, which are natively supported by Mac OS computers, are also capable of being run on Windows XP and higher.
iTunes, since version 4, also features the iTunes Store, where users can find and buy (and download) songs of their favorite artists or bands for a limited number of computers, and an unlimited number of iPods, or similar devices.