Zipeg is a freeware software that helps you when you need to extract contents of an archive. A great benefit of using this application is that you can preview a certain file before extracting it, allowing you to save space before you actually start extracting unneeded files. The interface is simple, being easy to go around it.
Zipeg does not automatically extract archives, this being an advantage talking about malicious files hidden inside such RAR, ZIP or other files. As you hover your mouse over files you will receive information about their sizes and compression rates, along with the date when the file was added into the archive.