IcoFX - IcoFX is an all-in-one solution for icon creation, extraction and editing.
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.
RealWorld Icon Editor - Create Windows icons and Mac OS icons from images and 3D models in an integrated icon maker.
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
IconLover - Icon editor for Windows.
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.