Entropy v1.5.0 [What's New] for Mac OS X 10.6 or newer. Try it free for 15 days.
Features

Here are some of the things you can do using Entropy…

  • Organize your files into highly compressed archives.
  • Protect your data using industrial strength encryption.
  • — Selectively preview and extract individual files inside an archive.
  • Add, delete, rename and move files inside existing archives.
  • Search for files inside archives.

…and the list goes on.

Features

Unarchive over 30 different archive formats. Easily extract an entire archive, or individual files.

Instantly view the contents of any archive without extracting it.
Yes, that includes compressed tarballs like tar.gz and tar.bz2.

Create archives in popular formats with ease — just drag & drop the files from Finder.

Entropy allows you to create split archives, encrypted ones, and even control the level of compression.

Modifying existing archives is just as easy.

Encrypt your archives using the industry standard AES-256 bit encryption.

These encrypted archives are compatible with other modern archivers.

Looking for a file buried deep within an archive? Use the search feature to quickly locate it.

Traditionally, archives created on a Mac are notorious for being littered with .DS_Store files. Entropy automatically filters out these files, leaving your archives clean and uncluttered. You can even define your own file filters.

7z arj cab chm cpio cramfs deb dmg
fat flv hfs iso jar lzh lzma mbr
msi nsis ntfs rar rpm squashfs tar tar.bz2
tar.gz udf vhd wim xar xpi z zip

All the formats above can be unarchived. In addition, the highlighted formats can be created and modified.

 
Only entropy comes easy - Anton Chekhov