Sounds of Earth - Listen to relaxing ambient sounds of nature
Noizio - Feeling that the noise of the big city is too much for you to bear?
Earth.fm - Earth.fm is a non-profit, growing library of pure, high quality nature sounds from around the world.
Power Nap App - Best napping timer with relaxing sleep sounds
Sleepy Baby - Help your baby sleep with the Sleepy Baby soundboard.
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.