First of all, please note that: UHARC/GUI (finished in 2007) is far from being WinUHA (finished in 2005) with a similar alias 'UHARC GUI' (most software download sites mixed them up). It has a compression ratio even higher than 7-Zip - basically we are sure it's the only multimedia archiver in the world now that supports the maximum compression rate (UHARC/GUI > 7-Zip > WinUHA >> WinZIP/WinRAR).

7-Zip, believe that a lot of people heard of it, but few of us really used, just because we are accustomed to the most common WinRAR and the once - great WinZIP. Anyway, 7-Zip is the one which currently has a extremely high compression ratio archiver (developed by Igor Pavlov from Russia), this also is the most important technical characteristics measure for such applications. In addition, 7-Zip releases based under GNU LGPL , so it is open source and free.