RAR Expander makes extracting files contained in RAR archives easier for those using OS X, and integrates right into the main user interface.

RAR Expander supports both single as well as multi-part archives and this is one of its key features. RAR Expander also supports password protected archives and since the software uses the official unRAR library for internal use, it is fully compatible with the archives produced by WinRAR format as well.

Great points:

• Works efficiently.
• Expands RAR archived files quickly and reliably.
• Simple, stable, and works well with both single and multi-part archives.
• RAR Expander app comes with complete AppleScript support

Some potential issues:

• Limited to RAR files.
• Does not work on restoring corrupted files.

Interface:

RAR Expander is not beautiful to look at, but it works well when it comes to expanding files quickly and reliably. The app's menu has an ‘Expand’ option which can be chosen to expand any files with the .rar format.

Conclusion:

RAR Expander is a simple utility that is handy when it comes to expanding RAR archives on OS X computers. The app uses the official unRAR library internally to provide full compatibility with files archived by using the WinRAR software. RAR Expander also supports multi volume and password protected files (though it is necessary for the user to remember the passwords) and can be used to expand both single and multi-part archives as well. The application is fully supported by AppleScript and includes example scripts that can be used to easily expand more than one RAR archives at once.