zenmix.io - Ambient background sound generator
Brain.fm - Music designed for the brain to enhance focus, relaxation, meditation, naps and sleep within 10 - 15 minutes of use.
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.
A Soft Murmur - Ambient sounds to wash away distraction.
Meditation Studio - Curated collections of guided meditations
Defonic - Create a unique sound environment at home or in the office