MyNoise - Custom shaped online noise machines. Many Many generic sounds
Noizer - Ambient sounds like Noisli, but free
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.
Defonic - Create a unique sound environment at home or in the office
Studiowave - Chillout tunes and inspiration
Tingles - Watch ASMR videos on your phone. Videos that make you tingle