FolderBox is an free extension for Windows Explorer. It displays additional folders in the lower part of Explorer, which enables you to display the contents of two or more folders at once! Within a FolderBox you can copy and move, open and delete files, just as usual. FolderBox supports the typical drag&drop handling of files. It is fully interoperable with "standard" Explorer or the desktop. You can even use FolderBox inside Internet Explorer!