SynchQt can synchronize your folders. File synchronization program based on the Qt toolkit, that is portable on all the major operating systems.
Simple reliable backup solution for your files, and maintenance program for photos.
SynchQt Features:
1. Synchronize files between folder tree pairs
2. Copy files based on last modified date / time
3. Backup files to local disk or across Windows network
4. Verify file contents to assure complete backup
5. Delete file by file type to clean folder trees of unwanted files
6. Threaded operation allows multiple concurrent operations

The license of this software is Free, you can free download and free use this file sync software.