Open-source software for syncing and backing up files across Windows, macOS, and Linux by transferring only essential data.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Flathub
- PortableApps.com
- Chocolatey




Order66 is described as 'A no fuss, cross-platform, single host, local file sync alternative to Windows Robocopy and Linux/Unix Rsync' and is a File Sync tool in the backup & sync category. There are five alternatives to Order66 for a variety of platforms, including Windows, Linux, BSD, Mac and Flathub apps. The best Order66 alternative is FreeFileSync, which is both free and Open Source. Other great apps like Order66 are Rclone, rsync, Robocopy and RoboCopy GUI.
Open-source software for syncing and backing up files across Windows, macOS, and Linux by transferring only essential data.




Versatile command-line utility for syncing, copying, and verifying files across local disks and multiple cloud storage providers. Features include hash-based integrity checks, timestamp preservation, compression, encryption, and mounting storage as drives for backup and transfer tasks.


Utility for Unix file and directory synchronization using delta encoding for efficient transfer, supports compression, incremental backup, remote operation via SSH, customizable filters, permission and timestamp preservation, and daemon mode on TCP 873.



Robocopy, or "Robust File Copy", is a command-line directory replication command. It has been available as part of the Windows Resource Kit starting with Windows NT 4.0, and was introduced as a standard feature of Windows Vista, Windows 7 and Windows Server 2008.

Visual interface for RoboCopy featuring job queuing, job monitoring, and logging.



