Foldermatch
FolderMatch is a program that compares directories and files, showing the differences clearly. -Easily, quickly, and reliably compare and synchronize two folders, two drives, or two computers. -Safely backup photos, emails, contacts, and documents. -See the exact text differences between two text files, Excel spreadsheets, Microsoft Word, Adobe PDF, or Rich Text (RTF) documents. -Find and remove all duplicate files on your machine. Even if their names are different! -Rename multiple files at one time
