It is best known for its ability to preview files. Under Mac OS X and Windows, Zipeg functions. Zipeg is an open-source, free program that extracts files, some of which are rarely used forms, from compressed archives like ZIP, RAR, 7z, and others. A brief video on the left demonstrates how to open and unpack a multi-part password-protected file using Zipeg. Find and extract only what you are looking for.
You can open a file with just a click and see what is inside. rar files, Zipeg is a universal free file opener.