Defonic - Create a unique sound environment at home or in the office
zenmix.io - Ambient background sound generator
I Miss The Office - An office noise generator
Immerse - Focus sounds for productivity
SoundDrown - Ambient sounds to help you focus, relax, and escape
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.