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




SyncToy is described as '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' and is a very popular File Sync tool in the backup & sync category. There are more than 50 alternatives to SyncToy for a variety of platforms, including Windows, Mac, Linux, Android and Android Tablet apps. The best SyncToy alternative is FreeFileSync, which is both free and Open Source. Other great apps like SyncToy 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.


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...




Protects operating systems, files, and disks on Windows PCs and Servers with full backup, cloning, and migration tools. Offers sync, encrypted backups, flexible restore to dissimilar hardware or partitions, scheduled and real-time backups, and space management features.




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.




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.




Bacula is a set of computer programs that permit managing backup, recovery, and verification of computer data across a network of computers of different kinds.




Back up your data and synchronize PCs, Macs, servers, notebooks, and online storage space.




Former SyncToy user converted to FFS. Researched a lot of alternatives, found FFS came closest to what I needed. Completely dropped SyncToy now. Happily using FFS for several months.