IconViewer - Bot Productions's IconViewer utility allows you to view, copy, and save the icons in a file through its property sheet.
IcoFX - IcoFX is an all-in-one solution for icon creation, extraction and editing.
IconsExtract - Extract icons and cursors stored in EXE, DLL, OCX, CPL files
JDraw - Open Source SF.net
Network Weathermap - Network Weathermap is a robust and open-source network visualization solution that enables you to use network statistics for creating live network maps.
Greenfish Icon Editor Pro - GFIE Pro is a powerful icon, cursor, animation and icon library editor.