ICL-Icon Extractor is a handy tool that allows you to scan and extract icons from any location, be it a local file, folder, zip-archive or a website.

You can even extract your favorite icons from Mac OS files and use them to give an added gloss to the Windows desktop. Collected icons are stored in icon libraries, preserving their source information. Added to this is the ability to replace any Windows icon with a new one in just a few clicks.