Zipcentral looks a lot like Winzip or PKZip with its simple
drag-and-drop file compression window and integration with Windows
Explorer’s context menus — just right-click a file and select Add
to Zip to crunch it down. But there’s one major difference:
Zipcentral is absolutely free.
Naturally, Zipcentral lacks some advanced features, including
encryption and the choice of the level of compression employed.
(Also, its author appears to be AWOL, so don’t expect to get help
if you find a bug in the software.)
However, Zipcentral does create self-extracting archives, and
spans archives across multiple disks when you’re doing big backups.
If you don’t need addition bells and whistles, Zipcentral is just
what the software tightwad ordered.