It's a little tricky to explain how this works, so you might need to check it out for yourself, but we'll do our best. Basically, you have to-do items, and you have categories. If you assign sub-items to an item -- you know, something that takes multiple steps to do -- it's treated like a category. Items can be assigned to multiple categories, so everything is flexible. If you're someone who hates anything that requires a mouse, this is right up your alley.
[via 43Folders]
