Mindomo

I am starting to play with this, perhaps for the curriculum presentation. Clear, easy to make and easy to understand. Great for presentations, and perhaps lessons... Shows the big picture and the details, easy links, etc.

http://www.mindomo.com/index.htm;jsessionid=410340CF2527804A975EB6D70FD37DAD

Evernote

This is a free storage system/search your information system/memory on steroids system. I haven't started because it seems it will take time to set up, but then be well worth the effort. http://www.evernote.com/about/learn_more/