This is a curation of white and ambient noise, all from freesound except for the first one made by the open source Android app Chroma Doze. Citations and credits below the break — some have creative commons limitations, please check the freesound citation.
Low White Noise, mp3, one hour.
Ocean sound, mp3, three hours.
Urban rainstorm, ogg, one hour.
Village Morning, mp3, two hours.
Midnight Woods Cottage, mp3, over three hours.
Sunny Point Cafe, mp3, 0.5 hours.
Coast By Night, mp3, 2.8 hours.