Make Icons using a Professional Authoring Tool
Axialis IconWorkshop v6.70 Professional Edition retail-FOSI
make your own icons for Windows, MacOS and Unix. Create Windows icons up to 256x256 for Windows Vista/7 and Macintosh icons up to 1024x1024 for OSX Lion 10.7. Unix/Linux uses PNG icons. IconWorkshop creates PNG images with alpha channel in a few clicks including from existing Windows and Mac icons.