Wikipedia
Winamp is a media player for Windows, Android, and OS X developed by Justin Frankel and Dmitry Boldyrev by their company Nullsoft, which they later sold to AOL, who sold it to Radionomy in January 2014. Since version 2 it has been sold as freemium and supports extensibility with plug-ins and skins, and features music visualization, playlist and a media library, supported by a large online community.
Version 1 of Winamp was released in 1997, and grew quickly popular with over 3 million downloads, paralleling the developing trend of MP3 (music) file sharing. Winamp 2.0 was released on September 8, 1998. The 2.x versions were widely used and made Winamp one of the most downloaded Windows applications. By 2000, Winamp had over 25 million registered users.
A poor reception to the 2002 rewrite, Winamp 3, was followed by the release of Winamp 5 in 2003, and a later release of version 5.5 in 2007.