Things is an award-winning task manager created by Werner Jainek of Cultured Code in 2007 in Stuttgart located in South Germany. It is known for its slick aesthetics and organizational structure that follows the GTD method.
The tool only supports Apple’s operating systems (iOS & macOS) and products (Apple Calendar).
Things is equipped with a powerful capturing mechanism which allows the user to quickly capture a task through a global keyboard shortcut, anywhere on your desktop computer. In fact, it takes a step further by allowing to capture a task based on the text the user has selected.
It currently also supports an array of features including reminders, tags, Markdown structures and quick find.
Remember The Milk
Microsoft To Do
Microsoft Outlook Calendar
Apple iCloud Calendar