1)   Stock Icons - XP and MAC style icons free 1.0
Original and professional stock icons for your web and software projects. Each stock icon is available in four different sizes and six different extensions. application icons, business icons, corporate icons.
STOCK ICONS, XP ICONS, MAC ICONS, PROFESSIONAL ICON, PROFESSIONAL ICONS, AQUA ICONS, BUSINESS ICON, BUSINESS ICONS, COOL ICON, COOL ICONS,

 2)   X-MAC 1500 MAC style application icons 1.0
The X-Mac icon collection provides you with a realistic style which has all the main characteristics of Mac © icons.
xp icons, application icons, web icons, professional icons, icon collections, icon sets, custom icons, vector icons, icon design, stock icons,

 3)   Professional Vista Software Icons 1.0
The long awaited "Professional Vista Software Collection" is now here. With a total icon count of 4699 icons, and icons ranging from Document Icons, Folder Icons, Media Icons, Web Directory and Internet related icons.
Software Icons, Vista Icons, Toolbar Icons, Professional Icons, Custom icons, Stock Icon packages, Icon Stocks,