The Unarchiver is a simple-to-use and more powerful replacement for "BOMArchiveHelper.app", the archive unpacker software included in Mac OS X. This freeware is able to manage many more formats and also filenames in foreign character sets (Japanese archives, for example). By using the libxad unarchiving library, The Unarchiver supports a lot of archive file formats, including Zip, Tar-GZip, Tar-BZip2, Rar, 7-zip, LhA, StuffIt... Requires Mac OS X 10.3.9.