VUE, the Visual Understanding Environment, is an open source concept mapping tool, licensed under the Education Commons License. Although originally developed with a focus on educational needs, VUE has grown to be used by people in many organizations working on engineering, graphic design, creative problem solving, construction, writing, and more. VUE 2 introduced the melding of the map with presentation tools, allowing people to advance from the linear nature of traditional slide paradigms to a more flexible model allowing presenters to walk their maps in dynamic and visually controlled manner.