ViceVersa Free is a free file sync tool for Windows Vista. It lets you sync files quickly and easily between computers, laptops, desktops, floppy drives, hard-drives, USB drives, CD-ROM drives, Zip drives, network drives, etc. You simply select source and target folders, click on "Compare" and get an instant rundown of matching (and non-matching) objects. You can then synchronize the two locations. You can preview all operations before synchronizing. ViceVersa Free uses file size, CRC and file timestamps to decide which files are newer.