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
RealWorld Icon Editor - Create Windows icons and Mac OS icons from images and 3D models in an integrated icon maker.
PhotoDemon - Lightweight portable BSD licensed photo editor for Windows focused on performance and usability.
IconLover - Icon editor for Windows.