FreeMind Portable is a free productivity application that acts both as a mind-mapper and a hierarchical editor. Written in Java and licensed under the GNU General Public License Version 2, FreeMind allows you to create a mind map and edit various sets of ideas around a central concept like you would on a piece of paper. This type of application is great for brainstorming sessions and even planning events and presentations. However, unlike other mind-mapping software, FreeMind is an open-source project and has extensive export capabilities that you might not find in other programs of the same type. It’s highly customizable and user-friendly.