BetterZip lets you quickly inspect archives without first extracting their contents. 
Add or extract files via drag-and-drop.
Create password protected archives (even with WinZip compatibility).
Delete files from archives.
Make archives compatible with Windows and Linux systems.
Currently supported formats: zip, tar, gzip, bzip2, rar, 7-zip, xar, cpio, arj, lzh/lha, cab, iso, chm, rpm, deb. More to follow soon...

Version 1.8.1:
BetterZip can now concatenate split files: something.001 + something.002 + …
Added a Russian localization by Alexandr Slavyshensky.
File modification times in zip files created with BetterZip were shifted by the timezone offset.
Folder modification times were always set to the time of the archive creation.
When RAR files were re-saved they always ended up as multi-volume archives.
Files in multi-volume RAR archives with missing parts can be previewed and extracted again, if the missing parts are not necessary.
RAR files with header encryption are handled in a better way now. You get repeated chances to enter the correct password and the archive will no longer be moved to the trash when you cancel the process. (If you had enabled this feature in the preferences.)
Only the first part of a multi-volume RAR archive with the old naming scheme (r00,…) was deleted automatically when the deleting option was set. 
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