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




The best File Sync alternative to Bacula is FreeFileSync, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Bacula and many of them are File Sync Tools so hopefully you can find a suitable replacement. Other interesting File Sync Tool alternatives to Bacula are Duplicati, rsync, FastCopy and Unison File Synchronizer.
Open-source software for syncing and backing up files across Windows, macOS, and Linux by transferring only essential data.




Duplicati stores encrypted, incremental backups with AES-256 encryption and GPG, compatible with Windows, Linux, MacOS. Supports cloud services like OneDrive, Google Drive, and includes a built-in scheduler, auto-updater. Run backups through a web interface or command line.




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...





FastCopy is the fastest copy, delete, & sync software on Windows. It uses modern checksum verification to ensure copy accuracy and data integrity. It handles long Unicode path names over MAX_PATH (260 bytes), and automatically optimizes copy mode operations between the same...




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.


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.



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.


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...

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.




LuckyBackup is an application that backs-up and/or synchronizes any directories with the power of rsync.




ViceVersa does File Synchronization, File Replication, File Backup and File Comparison. It can automatically verify data using a CRC32 checksum.



This free software allows you to backup your data to external drives, network locations, FTP servers and cloud storages.



Rsync is not at all a backup server