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.
The Unarchiver is a much more capable replacement for "BOMArchiveHelper.app", the built-in archive unpacker program in Mac OS X. The Unarchiver is designed to handle many more formats than BOMArchiveHelper, and to better fit in with the design of the Finder. It can also handle filenames in foreign character sets, created with non-English versions of other operating systems. I personally find it useful for opening Japanese archives, but it should handle many other languages just as well.
It is very simple to use and install - simply copy it into your Applications folder or whereever you prefer, and then set archive filetypes to open using it. This can either be done the usual way, or by double-clicking the icon to show The Unarchiver's preferences.
You're not allowed to share serial numbers, cracks, etc. or link to pages that contain them. If you do, your user account will be deleted, your IP address logged and legal action will be taken.
A nifty archiving utility
Free archive utility for OS X
