Outlining tool featuring a horizontal tree view.
Tree for Mac lets you map out your ideas and thoughts in a free-flowing yet accessible way. You can easily move keywords and concepts around, relate them to each other in various ways, and build anything from a basic outline to a completely organic thought tree. There are some projects that lists just don't work for, and Tree for Mac is designed to help you deal with just that type of situation.
Personal task management.
Mind mapping app.
Organize your thoughts, remember things and generate new ideas.