Duplicati can be configured using a web interface that can be accessed from any browser, even mobile. This also allows Duplicati to be run on headless machines like a NAS (network-attached storage). Duplicati uses strong AES-256 encryption to protect your privacy. You can also use GPG to encrypt your backup. Duplicati is free software and open source. You can use Duplicati for free even for commercial purposes. Source code is licensed under LGPL. Duplicati runs under Windows, Linux, MacOS. It requires .NET 4.5 or Mono.