Check out these royalty-free icon collections with over 350 icons and small graphics elements that come in all sizes - from 16x16 to 128x128, 8 to 32 bits. Most are WinXP icons with alpha-channel. It's what you need for your website or application.

Core Collection Software Developer , Web Developer and Professionals for world most enhanced high quality Core icon Collections Core Collection Set is an all-purpose collection of images and more..

A tool for exploring and extracting icons associated with files or contained inside of files.