Duplicacy vs QNAP Hybrid Backup Sync

Duplicacy is a cross-platform tool for backing up files to cloud storage, local disks, or SFTP servers, including computers and NAS boxes. It supports Windows, macOS, and Linux. Client-side encryption is optional: users set a password when initializing storage to encrypt it, while leaving the password empty means storage is not encrypted. Its lock-free deduplication design uses a two-step fossil collection process to remove chunks that are no longer referenced, without a centralized chunk database. The Web Edition can back up, restore, check, copy, and prune data, with scheduling and email notifications; its dashboard displays storage and backup status. The CLI can run manually or from scripts, and its source code is available on GitHub. CLI personal backups on a home computer and CLI restore, check, copy, and prune operations do not require a license. The Web Edition downloads a fully functional 30-day trial license automatically when used for backups without a license. Paid licenses vary by use and computer count; the listed personal license costs $20 a year for the first year and $5 a year thereafter for one home computer.

QNAP Hybrid Backup Sync has no write-up on Specifiction yet; its figures are above.