Packages with the systray use flag

media-sound / aqualung : Music player for a wide range of formats designed for gapless playback

  • Enable system tray support

media-sound / spotify : Spotify is a social music platform

  • Pulls in dependencies needed for systray support on some desktop environments

x11-wm / fluxbox : X11 window manager featuring tabs and an iconbar

  • Enables the system tray in the Fluxbox toolbar