Icon Editor by RedKetchup - View and edit Windows icons (ICO files) directly from the browser. Create icons in 8-bit, 24-bit, or 32-bit color depth. Extract all the layers of an ICO file as PNG images.
IcoFX - IcoFX is an all-in-one solution for icon creation, extraction and editing.
Icon Slate - Icon Slate lets you easily compose, import and export desktop icons in many formats.
IconWorkshop - Application to create and manage software icons. A must for developers.
Icon Generator - Icon Generator is a little application built on AIR that lets you generate a CS5 or Web 2.
JDraw - Open Source SF.net