pybag
Crossplatform files synchronization and backup portable tool.
PYBAG implements a portable bag and is intended for fast synchronization and backup. It lets you use a portable digital
storage device to carry your electronic documents similar to the way you can use a bag to carry paper documents.
You can synchronize the bag with your original files easily. If a synchronization conflict occurs, it will be reported. You
can specify rules for automatic conflict resolution.
With PYBAG, you can backup files and synchronize any changes made
to the original files with the bag. ...