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.