FreeMind, free download. FreeMind 0.9.0.2: Free and easy to use mind mapping tool.
Love this tool excellent features and it is free. Not one to use with students who are not technically literate. nice way to store visual information and the beauty of this is that it can be exported in a number of formats.
You can add pictures lecture notes and also voice notes.
See on freemind.en.softonic.com