License: Duplicati is licensed under LGPL
Description: The software allows for encryption and backup of files to the cloud (multiple services are available including Amazon S3).
Other: The folowing information comes from: http://code.google.com/p/duplicati/wiki/DuplicatiHackingProjects
Issue #70 Portable app version
Duplicati already supports running in portable mode, by simply starting Duplicati with the commandline option --portable-mode. To solve this task, you would need to examine the Portable Apps packaging system, and then produce a batch/python script that re-packages a zip file as a portable app, including a menu item that starts Duplicati with the --portable-mode option set.