From the developer: "TreeComp is an interactive utility to keep 2 directory trees and the files within the directories in sync. The combined tree is displayed using a treeview control with icons indicating the status per directory. Programs to view the differences (i.e. Microsoft's WinDiff) between files with the same name can be launched by double-clicking, as well as editors for a file residing in one of the 2 trees. After inspection files can be copied/deleted interactively as desired."