Absolutely Free Icon Library: Free clipart, animations, and fonts. Free high quality images, easy to browse.
Anthony's Icon Archive: Classic graphics archive with arrows, balls, buttons, and many standard icons.
Disability Graphics: A collection of computer graphics for use on web pages, in newsletters, and elsewhere.
Flip Flop Flyin': A bunch of silly GIFs icons created scientifically to help make a better tomorrow.
Fractus Icons: A collection of fractal generated icons. All icons are 32x32 pixels and in GIF format.
ICON CLAW: Garfield and Simpsons icon gallery.
IconBAZAAR: Archive of icons to aid HTML developers in building their own personal Web pages.
Jeffery Zeldman's Icons: Collection of icons for web sites, or specially formatted packages for Mac, Windows, or Unix desktop.
PatriotIcon.org: Free patriotic flag icons and images to use on web sites or desktop.
QBullets: Small icons to be put on web sites.
The Email Icon Pages: A growing collection of static and animated email icons.
The Icon Gallery: A large collection of still and animated LiveJournal icons.
Web Link Icons: Offers original web icons that use the 216 "browser safe" colors.