Supported file formats
Zip
RAR (rar, r00, r01, r02, ...)[read only]
7zip (7z, 7z.001, 7z.002, ...)
Apple disk image (dmg)
Tar
Tar Gzip (tar.gz, tgz)
Tar Bzip2 (tar.bz2, tbz)
Tar Z (tar.Z)
CPIO (cpio)
ACE [read only]
ARJ [read only]
CAB [read only]
LhA (lha, lzh) [read only]
StuffIt (sit) [read only]
StuffIt Expander Archive (sea) [read only]
BinHex (hqx) [read only]
MacBinary (bin, macbin) [read only]
Linux RPM (rpm) [read only]
PAX [read only]
Amiga disk file (adf) [read only]
Compressed Amiga disk file (adz, ADZ) [read only]
Amiga DMS disk archive (dms, DMS) [read only]
Amiga LhF (f, F) [read only]
Amiga LZX (lzx) [read only]
Amiga DCS disk archive (dcs) [read only]
Amiga PackDev (pkd) [read only]
Amiga xMash disk archive (xms) [read only]
Amiga Zoom disk archive (zom) [read only]
HA archive [read only]

System Requirements
Rucksack runs on Mac OS X Leopard 10.5 and Snow Leopard 10.6

WHAT'S NEW
Version 1.0b12:
Fixed: Crashes on launch under 10.5
Fixed: Crashes on quit under 10.5
Fixed: Large, opaque Zip icon makes drop in Finder tricky
Fixed: Crashes when extracting untarred gzip archive
Fixed: Crashes when splitting to chunk size larger than file size
Fixed: Smart archive names not working when creating archives




http://hotfile.com/dl/31981105/6366e97/Rucksack_10b12mc.zip.html