Hear - Hear is a sound enhancement application for the Mac.
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.
Krisp - Eliminate background noise, minimize distractions, feel more confident, and activate your communication superpower with Krisp, an AI-powered software solution for effective online meetings.
Noizio - Feeling that the noise of the big city is too much for you to bear?
TimeBolt - spend less time editing video
zenmix.io - Ambient background sound generator