Icon Generator - Icon Generator is a little application built on AIR that lets you generate a CS5 or Web 2.
Anima App - Design, get feedback, convert to code, publish, iterate.
Icon Slate - Icon Slate lets you easily compose, import and export desktop icons in many formats.
Sketch Repo - Collection of resources for anyone who uses Sketch
IcoFX - IcoFX is an all-in-one solution for icon creation, extraction and editing.
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.