Be Focused by XWaveSoft - Simple Pomodoro timer in your Mac's menu bar
Sounds of Earth - Listen to relaxing ambient sounds of nature
Ambiently - White Noise to help you concentrate, focus & relax
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.
Pomodus - A Pomodoro app that is integrated with Slack so that you can focus without Slack or your colleagues interrupting you. It silences your notifications, let's colleagues know that you're busy & when you'll be done. View stats & export your history.
Noizio - Feeling that the noise of the big city is too much for you to bear?