Stickies - Stickies is a PC utility written to replace Post-It-style notes left stuck to your monitor.
Visual Understanding Environment - Visual Understanding Environment (VUE) is a mind-mapping and concept-mapping tool.
Notezilla - Colorful & powerful sticky notes app for Windows & Phones.
Flying Logic - Highly visual software for planning support used by strategists, process improvement specialists, teachers, and writers. Windows, Mac OS X, and Linux.
Simple Sticky Notes - Sticky notes have long served a great purpose. Hang them around the home or office and be instantly reminded of important items in your personal or professional life... read more.
ThinkComposer - Software for create adaptable and multilevel diagrams, concept maps, mind maps and models