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Duplicati vs Unison File Synchronizer

Professional comparison and analysis to help you choose the right software solution for your needs.

Duplicati icon
Duplicati
Unison File Synchronizer icon
Unison File Synchronizer

Duplicati vs Unison File Synchronizer: The Verdict

⚡ Summary:

Duplicati: Duplicati is an open source backup software that securely stores encrypted, incremental, compressed backups on cloud storage services and remote file servers. It works with standard protocols like FTP, SSH, WebDAV and various backends like Microsoft OneDrive, Amazon S3, Google Drive and more. Duplicati is free, runs on Windows, macOS and Linux.

Unison File Synchronizer: Unison is an open source file synchronization tool for Windows, macOS, and Linux. It allows two replicas of a collection of files and directories to be stored on different hosts, modified separately, and then brought up to date by propagating changes in both directions.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature Duplicati Unison File Synchronizer
Sugggest Score — —
Category Backup & Sync Backup & Sync
Pricing Open Source Open Source

Product Overview

Duplicati
Duplicati

Description: Duplicati is an open source backup software that securely stores encrypted, incremental, compressed backups on cloud storage services and remote file servers. It works with standard protocols like FTP, SSH, WebDAV and various backends like Microsoft OneDrive, Amazon S3, Google Drive and more. Duplicati is free, runs on Windows, macOS and Linux.

Type: software

Pricing: Open Source

Unison File Synchronizer
Unison File Synchronizer

Description: Unison is an open source file synchronization tool for Windows, macOS, and Linux. It allows two replicas of a collection of files and directories to be stored on different hosts, modified separately, and then brought up to date by propagating changes in both directions.

Type: software

Pricing: Open Source

Key Features Comparison

Duplicati
Duplicati Features
  • Incremental backups to minimize bandwidth requirements
  • Client-side AES-256 encryption
  • Supports multiple cloud storage providers (Amazon S3, OneDrive, Google Drive, etc)
  • Open source and free
  • Deduplication to avoid uploading duplicate data
  • Scheduling and automation capabilities
  • Command line and web UI available
  • Backup verification and repair
  • Bandwidth throttling
Unison File Synchronizer
Unison File Synchronizer Features
  • Two-way sync
  • Detects conflicts and prompts user
  • Supports permissions, symlinks, hardlinks
  • Cross-platform - Windows, macOS, Linux
  • Command line and graphical UI
  • Selective sync
  • Fast transfer of incremental changes

Pros & Cons Analysis

Duplicati
Duplicati

Pros

  • Free and open source
  • Strong encryption
  • Good choice of backend storage options
  • Easy to set up and use
  • Deduplication saves bandwidth
  • Wide platform support

Cons

  • Limited reporting capabilities
  • No mobile apps
  • Restores can be slow
  • Some backend providers have usage limits
  • No built-in file versioning
Unison File Synchronizer
Unison File Synchronizer

Pros

  • Free and open source
  • Reliable syncing
  • Handles conflicts gracefully
  • Preserves file permissions and metadata
  • Lightweight and fast

Cons

  • Steep learning curve
  • Command line only on Linux
  • No cloud sync or mobile app
  • No versioning
  • Limited reporting/logging

Pricing Comparison

Duplicati
Duplicati
  • Open Source
Unison File Synchronizer
Unison File Synchronizer
  • Open Source

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Learn More About Each Product

Duplicati
Duplicati
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Unison File Synchronizer
Unison File Synchronizer
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