From AYA Systems:
IconLibrary Maker is a icon library maker and icon conversion software. It create icon libraries, convert icons for Mac OS X and Windows XP, Vista, Windows 7.
1. Make icon libraries for all operating systems: Mac OS X, Windows
With IconLibrary Maker make your own icons and icon libraries for Mac OS, Windows. Supports Macintosh icons up to 1024x1024 for Mac OS X Lion 10.7 and Windows icons up to 256x256 for Windows Vista, 7, 8, Saves thousands of icons in one file.
2. Full support for Windows Vista / 7 PNG-compressed icons
IconLibrary Maker loads, creates, saves icons for Windows Vista, 7. These operating systems includes a PNG-compressed icon format. It permits creating icons up to 256x256 with alpha channel with smaller file size.
3. Convert icons between Mac OS X and Windows
IconLibrary Maker supports both Windows icon(ICO) and Macintosh icon(ICNS). It reads all kinds of Macintosh icons up to Mac OS X 10.7 Lion. It can reads Mac OS icons to convert them to Windows, or reads Windows icons to convert them to Mac OS icons.
4. Extract icons from files containing icons
IconLibrary Maker extract icons from files containing icons, supports: ICO, CUR, ICNS, DLL, EXE
5. Create icons from images
IconLibrary Maker can open and convert images to Macintosh icons and Windows icons. Many image file formats are supported: BMP, PNG, GIF, JP2, JPG, PSD, TGA, TIF, DDS, EXR, G3, HDR, IFF, LBM, KOA, MNG, PCD, PCX, PFM, PCT, PBM, RAS, SGI, WBMP, XBM, XPM...
6. Export icons to images
IconLibrary Maker export icons to image files. Many image file formats are supported: BMP, PNG, GIF, JP2, JPG, TGA, TIF, PBM, WBMP, XPM...
7. Extract icons from folder on local computer
IconLibrary Maker scans the files and folders on your computer, and extract the icons and cursors stored in EXE, DLL, ICO, ICNS, CUR, ICL.
8. Make icon transparent
IconLibrary Maker making icon background transparent.