Noisli - Noisli is a fantastic background noise and color generator for working and relaxing. Online soothing ambient sounds like White noise, Rain and Coffee Shop.
Alarmy - World's most annoying alarm app
Noizio - Feeling that the noise of the big city is too much for you to bear?
Galarm - Social alarm clock and reminders
A Soft Murmur - Ambient sounds to wash away distraction.
Free Alarm Clock - Free Alarm Clock is a free, full-featured and user-friendly computer alarm clock for Windows.