OmniFocus
This app is exclusive to Mac users and it enables them to keep track of their projects and to-do lists as a way to run a business efficiently and don’t forget tasks. You can also store tasks that are not ready to process and come back to them later.
The features of the application allow users to design projects and assign tasks to them, with all the specifics involved. The idea behind this app is productivity, so that users can stop worrying about the things they have to do by stating how they will be done and when the should be completed.
The app allows you to save tasks in your inbox and then place them in different categories and assign them to different projects. The projects can range from creating a promotion to making sure you buy all the groceries you need this week, it is up to you. Omnifocus costs a $79.99 and it is available on the Mac App Store.