FreeZip 2

Lacking a stand-alone interface, FreeZip adds a collection of useful archive-management commands to Explorer's context menus. Right-clicking a file or archive then choosing one of the commands, such as Zip, UnZip here, ListZip, or TestZip, launches a command-line tool that does the specified action.

It's not pretty, but effective, and of course, free, though occasionally we couldn't get the Zip command to appear for certain file types. Author Stanislawek offers optional encryption and stand-alone archive-creation features through patches available from the FreeZip Web site.