Visual Understanding Environment or VUE is a free, open source concept mapping application written in Java. Developed by TUFT University
License: Open Source
Visual Understanding Environment (VUE) is designed for data visualization and analysis with a focus on structure and integration, while FreeMind is primarily a mind-mapping tool that emphasizes ease of use and collaboration. VUE is better for users needing detailed data manipulation, whereas FreeMind excels in quick brainstorming and visual organization.