Use DirSync Pro 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 Pro 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 Pro is programmed completely in platform independent Java™ so it can be run under nearly every modern operating system including Windows™, Linux™ and Macintosh™. DirSync Pro has a user-friendly User Interface which helps you configure many options to your needs. You can use DirSync Pro alsoo trough the command line which makes it very flexible for running in batches.