Duplicati

Duplicati is a cross-platform backup client that creates encrypted, compressed, incremental backups and sends them to a wide range of cloud storage providers or remote file servers. It is designed for automated, bandwidth-efficient backups with a web-based UI and command-line tooling.

Key Features

• Client-side encryption using AES-256 or GnuPG before upload
• Incremental/differential backup approach to reduce storage and bandwidth
• Built-in scheduler for unattended, recurring backups
• Multiple destination types including SFTP/SSH, WebDAV, FTP, and S3-compatible/object storage providers
• Flexible selection and filtering (folders, file types, include/exclude rules)
• Web-based management interface plus command-line operation
• Support for backing up open/locked files via VSS on Windows and LVM snapshot support on Linux

Use Cases

• Encrypted offsite backups of desktops or servers to S3-compatible storage or a NAS
• Scheduled backups to remote servers over SFTP/WebDAV with retention rules
• Bandwidth-aware incremental backups for laptops and small office environments

Limitations and Considerations

• As a backup client, it requires a separate storage destination (cloud bucket, remote server, or file share) to receive data

Duplicati is a good fit when you need privacy-preserving backups with strong encryption and flexible destination support. Its combination of scheduling, incremental backups, and broad protocol/provider compatibility makes it practical for both home and small business environments.