Columns is a list manager.
Lists are great for organizing things and see the big picture. It's perfect for planning, tracking, noting, managing and thinking.
It is like mind maps but organized in a linear, columns structure.

What for?
Make a list of movies you want to see.
Put all your recipes together.
Create a roadmap for your project.
Organize teamwork. Lists help track progress.
Write a novel.

So it’s a tool for organizing lists, and lists are a tool for organizing things. If you need the ultimate organizer, you found it.