Since Apple has chosen (for the time being) not to release an editor, I've created clip2icns to fill that gap. It takes a picture from the clipboard, splits it up into the icon and mask, and either inserts it into a current file or makes a new icon.
|File Size||221.38 kB|
|Operating System||Macintosh Mac OS Classic|
|System Requirements||Does not require MacOS 8.5 in order to be used.|