DiffDir compares or synchronizes directories by analysis of the content of files. DiffDir allows you to visualize the differences of the content for the "Text" files and uses MD5 check sum to manage the controls. DiffDir shows the numbers of lines and the modified lines. When synchronizing, DiffDir only copy the files where a difference has been found thus limiting the transfer of files. DiffDir is an easy-to-implement, user-friendly piece of software designed to help you. DiffDir can also view the differences: the file size, the dates of changes, the file contents, the MD5 sum.