The Unarchiver is designed as a more complete replacement for the Archive Utility app that's built-into OS X.
The Unarchiver is better than the default OS X app because it can handle many more formats and integrates better with Finder. In addition, it can also handle filenames in foreign character and supports a huge range of formats including Zip, Tar-GZip, Tar-BZip2, Rar, 7-zip, LhA, StuffIt and many others.
There really is very little to criticize in The Unarchiver. It's fast, free and can handle just about anything. It's easy to use and doesn't consume a lot of system resources. The only thing some people may miss is a 64 bit version although it's hardly necessary.
The Unarchiver is everything a decompression package should be and best of all, it's free.
- Fixed a bug that made the app fail to launch on 10.6 and 10.7. Fixed another sandbox bug that caused archives on remote volumes to fail to open.
The Unarchiver supports the following formats
Zip, Tar-GZip, Tar-BZip2, Rar, 7-zip, LhA, StuffIt and much more