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




Allway Sync is described as 'File and folder synchronization software for Windows' and is a popular File Sync tool in the backup & sync category. There are more than 50 alternatives to Allway Sync for a variety of platforms, including Windows, Mac, Linux, Android and PortableApps.com apps. The best Allway Sync alternative is FreeFileSync, which is both free and Open Source. Other great apps like Allway Sync are rsync, SyncBack, GoodSync and Unison File Synchronizer.
Open-source software for syncing and backing up files across Windows, macOS, and Linux by transferring only essential data.




rsync is a software application for Unix which synchronizes files and directories from one location to another while minimizing data transfer using delta encoding when appropriate. An important feature of rsync not found in most similar programs/protocols is that the mirroring...



SyncBack allows for backing up, synchronizing, and restoring files on Windows. It offers a free version, SyncBackSE and Pro for more features, including local networks and cloud backups. Ideal for individuals and large organizations like hospitals, ensuring data protection and recovery.



A comprehensive solution for file synchronization and backup, GoodSync allows seamless and real-time file sync across desktops, mobiles, and cloud services directly, bypassing third-party servers. Ideal for both personal and professional needs.




Unison is a file-synchronization tool for POSIX-compliant systems (e.g. *BSD and GNU/Linux), macOS and Windows, with the caveat that the platform must be supported by OCaml. It allows two replicas of a collection of files and directories to be stored on different hosts (or diffe.


Modify the Windows Explorer right-click menu, add built-in utilities, run custom commands, create symbolic links, sync folders with bidirectional deletion, reveal subfolder sizes, manage 'Send to' options, and enable or disable context entries from other apps.




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.

Simple fast backup for Windows. At a glance - small and very lean, very fast delta copier, excellent user interface, device tracking, shadow copying, move/rename detection, run-as-a-service mode, robust support for multi-million item backups with terabytes of data, intelligent...




Synkron is an application for folder synchronisation and folder-backups that allows you to configure your synchronisations in detail. Despite having many features, the user interface of Synkron is very user-friendly and easy to use.




SyncToy is a free PowerToy designed by Microsoft, that provides an easy to use graphical user interface that can automatically synchronize local or network files and folders, but not WebDAV-, "Windows Mobile" files or folders and no triangle-sync as only Allway Sync...

Toucan is a small portableapp utility allowing you to synchronise, backup and secure your data with more options than the built in suite utilities. It is split up into 7 tabs, allowing you to easily find the function that you want.


DirSync Pro is a small, but powerful utility for file and folder synchronization. Java JRE 1.7 or above is needed to run DirSync Pro.




AllwaySync has changed hands many times. Back in the day, I trusted it. However, now it was acquired by GoodSync, and they discontinued it. FreeFileSync is essentially donation-ware and continues to get updates.