Noizio is an app that will drown out the noise of the street and allow you to concentrate on the work at hand, increasing your productivity. On the other hand, it can also set the mood for a romantic evening or lull you to sleep, ensuring that you will dream soundly all night long. An ambient sound equalizer app for creating a mixture of ambient sounds available for macOS.
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.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
MyNoise - Custom shaped online noise machines. Many Many generic sounds
Doit.im - Doit.
A Soft Murmur - Ambient sounds to wash away distraction.
Remember The Milk - Remember The Milk is a task and time management application for mobile devices.