Duplicity
Duplicity is an open-source command-line backup tool that creates encrypted, incremental backups to local or remote storage. It uses the rsync algorithm to efficiently transfer only changed data, and supports GPG encryption for security. It can back up to various protocols including SSH, FTP, Amazon S3, and local filesystems.
Developers should use Duplicity for secure, automated backups of critical data like configuration files, databases, or application code, especially in production environments. It's ideal for compliance with data protection regulations due to its encryption, and for reducing storage costs through incremental backups. Common use cases include backing up server configurations, version-controlled repositories, or cloud-based application data.