Icon Slate - Icon Slate lets you easily compose, import and export desktop icons in many formats.
Feather Icons - Simply beautiful open source icons
Icon Generator - Icon Generator is a little application built on AIR that lets you generate a CS5 or Web 2.
Icons8 - Free app for Mac & Windows already containing 39,800 icons. Allows to search and import icons…
IcoFX - IcoFX is an all-in-one solution for icon creation, extraction and editing.
IconStore - Free icon packs by first-class designers