UnisonLinux
vs
SyncBackWindows
Unison as a Linux alternative to SyncBack
Updated
Our verdict
Unison is a solid replacement for SyncBack if you are comfortable with terminal-based configuration or simple GUI frontends. It handles two-way synchronization and one-way mirroring effectively across local and SSH paths. However, it lacks native cloud storage integration, so you must mount services like Dropbox or S3 as local directories first. If your workflow relies heavily on graphical drag-and-drop setup or direct cloud API connections, Unison will feel more manual. For users who value open-source reliability and precise control over conflict resolution, it is a strong choice, though less intuitive than SyncBack for casual users.
- License
- GPL-3.0-or-later
- Price
- Free
- Latest version
- 2.54.0 (June 13, 2026)
- Rating
- 5/5 (1)
What works the same
- Supports bidirectional file and directory syncing.
- Allows one-way mirroring for backup purposes.
- Handles local and remote (SSH) paths.
- Provides configurable conflict resolution mechanisms.
- Preserves file permissions and metadata.
What is different
- No native cloud storage integration; requires manual mounting of cloud drives.
- Configuration is primarily text-file based, lacking a comprehensive native GUI.
- Does not support direct network share protocols like SMB/CIFS without additional tools.
- Scheduling requires external tools like cron or systemd timers rather than built-in schedulers.
- Filtering options are less granular and user-friendly than SyncBack's GUI filters.
Opening your SyncBack files
Unison cannot open or import SyncBack configuration files. You will need to manually recreate your sync profiles in Unison's text-based profile format, mapping source and destination paths, archive settings, and ignore rules from your existing SyncBack jobs.
Switching from SyncBack to Unison, step by step
- Install Unison via your package manager or Flathub.
- Create a text file for each sync profile in ~/.unison/.
- Define root paths and archive file locations in the profile.
- Configure ignore rules and conflict handling parameters.
- Test the sync manually before scheduling.
- Set up cron or systemd timers for automated runs.
Key features of Unison
- Bidirectional file synchronization
- Supports local, remote (SSH), and network paths
- Detects and resolves two-way changes
- Cross-platform: Linux, macOS, Windows
- Preserves permissions, ownership, and symlinks
- Configurable conflict detection and handling
- Profile-based configuration system
- Runs in terminal or with GUI frontends
How to install Unison on Linux
flatpak install flathub io.github.bcpierce00.unisonsudo apt install unison-2.53sudo apt install unison-2.53sudo dnf install unisonsudo pacman -S unisonsudo zypper install unisonFrequently asked questions
Can Unison sync directly to Dropbox or S3?
No, Unison does not have built-in cloud connectors. You must mount these services as local directories using rclone, s3fs, or the native Dropbox client before syncing.
Is there a graphical interface for Unison?
Unison is primarily command-line. While third-party GUI frontends exist, they are often less maintained or feature-complete than the core tool. Most users rely on the terminal or simple wrappers.
How does Unison handle conflicts?
Unison detects conflicting changes and can be configured to prompt the user, choose one side, or keep both files with modified names, depending on your profile settings.