FreeFileSync is an Open-Source folder comparison and synchronization tool. It is optimized for highest performance and usability without restricted or overloaded UI interfaces. -> See the helpfile for the list of key features!

Changelog:

New installer package for portable/local/32/64-bit versions
Built-in support for very long filenames: apply ?-prefix automatically
New button for synchonization preview: show equal files
RealtimeSync: Respond to directory or volume arrival, e.g. USB stick insert
Start comparison automatically when double-clicking on *.ffs_gui files
Visual progress indicator for sys-tray icon
Fixed string comparison for 'ß' and 'ss' (all Windows versions)
Fixed general string comparison for Windows 2000
Significantly faster file icon loading
Applied new IFileOperation interface for recycle bin (Windows >= Vista)
Patched <Automatic> mode to handle FAT32 2-second file time precision
Play optional sound after comparison: "Compare_Complete.wav"
Allow environment variables for logfile-directory
Enhanced conflict reporting
Added Swedish translation
Updated translation files

Program Information Category: Tools and Utilities Type: Free Version: 3.3 Size: 5.9MB Works on: Windows Product page: here