iOS Jetpack - Beautiful easy-to-use screenshot templates for App Store
Visual Understanding Environment - Visual Understanding Environment (VUE) is a mind-mapping and concept-mapping tool.
App Screenshot Maker - Design marketing screenshots for your app in minutes
Flying Logic - Highly visual software for planning support used by strategists, process improvement specialists, teachers, and writers. Windows, Mac OS X, and Linux.
Promomatic - Easily create beautiful app store assets
FreeMind - FreeMind is a premier free mind-mapping software written in Java.