showFoto - ShowFoto is the standalone image editor of the digiKam project.
IcoFX - IcoFX is an all-in-one solution for icon creation, extraction and editing.
PixBuilder - Free Photo Editing Software for PC
IconWorkshop - Application to create and manage software icons. A must for developers.
PhotoDemon - Lightweight portable BSD licensed photo editor for Windows focused on performance and usability.
IconLover - Icon editor for Windows.