Timetaco - Create your own countdowns, as easy as 3, 2, 1
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.
Coountdown - 3 2 1 ! Create day counter on menu bar macOS. 🚀
Noizio - Feeling that the noise of the big city is too much for you to bear?
Padbury Clock Screensaver - Minimal screensaver for Mac
A Soft Murmur - Ambient sounds to wash away distraction.