Directory Synchronize (DirSync) is a small, but powerful utility for file and folder synchronization. DirSync can be used to syncrhonize the content of one or many folders recursively.

Using DirSync you can make incremental backups. In this way you'll spare lots of time because you don't have to copy all the files each time you want to update your backup; only new/modified/larger files would be copied.

Use DirSync to easily syncrhonize files from your desktop PC to your USB-stick (PDA, Notebook, ...). Use this USB-stick (PDA, Notebook, ...) to synchronize files to another desktop PC.

Unlike many other synchronization software, DirSync is Open Source; it is 100% free of charge, 100% free of commercial text, 100% free of advertisements and 100% free of spyware. You can use it as long as you like, without any limitations in time or funcationality. You can freely distribute it according to GPL3.

DirSync is programmed completely in platform independent Java™ so it can be run under nearly every modern operating system including Windows™, Linux™ and Macintosh™.

DirSync has a user-friendly User Interface which helps you configure many options to your needs. You can use DirSync alsoo trough the command line which makes it very flexible for running in batches.