ftp://debian.lcs.mit.edu/pub/debian-amd64/debian-amd64/pool/main/z/zsync/  direct

63 B  2004-09-09zsync_0.3.3.orig.tar.gz  29 mirrors
97.23 KB  2005-07-04zsync_0.3.3-1.sarge.1_amd64.deb  info  browse  146 mirrors
 zsync - client-side implementation of the rsync algorithm
 /Main/Other/amd64/net/

65 B  2005-08-16zsync_0.3.3-1.sarge.1.dsc  27 mirrors
69 B  2005-08-16zsync_0.3.3-1.sarge.1.diff.gz  27 mirrors