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.