Citrus Alarm Clock - Version 2.3 Citrus Alarm Clock is a software alarm clock that helps you wake up relaxed and on time. Citrus uses your own music collection and you can choose songs individually or organize them into shuffleable playlists. When it's time to wake up, Citrus will automatically wake your computer from its low-power sleep state and gently fade in your music so you're not startled awake. You can even set different alarm times for different days. If you want to rest a little longer, just tap the space bar to snooze, or keep a wireless mouse at your bedside and press the middle button, just like a bedside alarm clock!