FreeFileSync
- PLATFORM:
 
License: GPLv3
Features:
- Download and use for free
 - Synchronize folders on network shares and local drives
 - Synchronize mobile devices via MTP (Android, iPhone, tablet, digital camera)
 - Synchronize with Google Drive cloud storage
 - Free FTP client: Synchronize via FTP (File Transfer Protocol) and FTPS (SSL/TLS)
 - Access files online using SFTP (SSH File Transfer Protocol)
 - Detect moved and renamed files and folders
 - Get sync results as an email notification
 - Manage versions and keep a history of deleted/updated files
 - Compare and synchronize multiple files in parallel
 - Show drive space usage as a directory tree
 - Copy locked files (Volume Shadow Copy Service)
 - Detect conflicts and propagate deletions
 - Compare files by content
 - Configure handling of Symbolic Links
 - Automate sync as a batch job
 - Process multiple folder pairs
 - Comprehensive and detailed error reporting
 - Copy NTFS extended attributes (compressed, encrypted, sparse), NTFS security permissions, NTFS Alternate Data
 - Streams
 - Copy HFS+ extended attributes and ACLs
 - Support long file paths with more than 260 characters
 - Fail-safe file copy prevents data corruption
 - Cross-platform: Runs on Windows, Linux, macOS
 - Use macros %time%, %date%, et al. for recurring backups
 - Expand environment variables like %UserProfile%
 - Access variable drive letters by volume name (USB sticks)
 - Native 64-bit support
 - Prevent disc space bottlenecks via optimal sync sequence
 - Full Unicode support
 - Highly optimised run time performance
 - Include and exclude files via filter
 - FreeFileSync portable and local installation available
 - Handle daylight saving time changes on FAT/FAT32
 - Case-sensitive synchronization
 - Serialize multiple users accessing the same (network) folder via folder locking
 - Fully localised user interface available in 30+ languages