If you need to open archives like .zip or .rar, if you want to make files smaller to send by e-mail or simply to maintain large free space on hard disk, ZipGenius will do it for you and is for free.
This software works with more than 20 types of archives, so is not limited only to zip or rar.
Interface is very intuitive, easily you can create or open archive, extract files or send it by e-mail. these options are available on main window, but it has large and suggestive icons on top horizontal navigation.
It works with 7-zip, tar, tgz, gz and other formats which are not supported by other free archivators from the market.
One interesting option that I like is Search Archives; here you can choose one or more specific types of archives and search on hard disk or connected devices such as CD/DVD/USB to find them fast.
You can protect archives with passwords and create backups for popular applications like Thunderbird, Windows Live Mail and folders from your PC.
As a conclusion ZipGenius is clean, easy to use and is completely free.