Links:

Icon Downloads

Adobe Illustrator - Vector graphics software
Adobe Photoshop - Raster graphics/image editing software
ICO (Windows Icon) file format - Plug-in for opening up & creating icons in Photoshop.

IconWorkshop - Create, edit, view, make libraries, convert Icons to .PSD files/PNG files & convert .PSD files/PNG files to icons, convert multiple Mac OS icons to windows format in one process, make icon snapshots. The best icon software for Windows
IconBuilder 2.0 for Windows - Photoshop plug-in for making icons
GIF Movie Gear - The "for icons" version. Convert Icons to .PSD files & convert .PSD files to icons
Microangelo - Create, edit, view icons, make libraries
IconTweaker - Change default icons
Bee Icons - Change default icons
E-Icons - Change default icons
IconPackager - Change default icons
Icon Searcher

GrApple - Aronnax's Firefox themes
Tab Sidebar - Firefox extension to add OmniWeb style preview tabs.
Uno - Theme that brings the sunken unified toolbar/titlebar look & feel (like Apple Mail 2) to every single window on OS X (metal or aqua, including Finder, iPhoto, iCal etc.)

AveDesk - Desktop enhancer
FlyakiteOSX - Total conversion for Windows XP to make your computer look like Mac OS X
XPize - GUI enhancer that replaces most of the 8 bit non XP style icons, AVIs & BMPs that Microsoft have always overlooked
Vista Inspirat BricoPack - Total conversion for Windows XP/2003 to make your computer look like Windows Vista