Open source (freeware) for SEN students

The JISC Regional Support Centre (Scotland & North East) has created a free application, MyStudyBar. It has a collection of freeware and open source software which is specially selected to help students with literacy difficulties (planning, reading, writing, vision and voice). But schools, colleges and universities around the world (all the way to New Zealand) are finding that many other students are benefiting from using the mindmapping tool (XMind)as well.

There are lots of free tools for mindmapping out there.  One I've just been experimenting with is Mindomo.  If you know of others you'd like to recommend to other students, please add them as a 'Comment' to this post.