Created by: stemid
Adding Attic and Bup, two great open source alternatives for file deduplication in Python. I personally use Attic to backup several TB of data and the deduplication ratio is better than Symantec Netbackup.
Bup can also pull files over ssh directly into a deduplication store. Attic is still working on this feature but can be used either from clients as push or in conjunction with rasnapshot as a deduplication storage.