I was looking for a good mind map tool for so long until I found OrgPad and it taught me how to use something better than mind mapping - structured notes/free mapping.
I've been using OrgPad extensively for almost a year now and I'm more and more glad that OrgPad exists. This tool helps me bring order to the chaos in my work.
Gradually I have transferred almost all my work as a teacher into it: TODOs, lesson preparations, study materials, but most importantly assignments for students.
With an OrgPad assignment, I can see more how the student has thought about it. It's different than other types of assignments - more thorough, students are more engaged and that's the point ;)