Stacks in Mac OS X Snow Leopard allow users to organize files and applications right from the Dock. Stacks can be created by dragging folders to the right side of the Dock. Clicking a stack will display its contents in a fan, grid, or list based on the number of items. Customizations like sort order and preferred view style can be set from the stack menu. The Downloads stack automatically collects all internet downloads from apps like Safari and Mail in one convenient location.