Mindmeister is an online mind mapping and brain storming site that allows users to create and share mind maps.  It has a free account, Basic, which allows you to create up to 3 mind maps and share, collaborate, and import data. If you want to use more than that, you would have to sign up for a paid version. There are discounts for education.

Mindmaster is full of features and very easy to use. There are mobile apps for iOS and Android.



Other Mind Mapping services:

Popplet - online presentation, mindmapping, and bulletin board

Spicynodes - visualize and organize information and resources

Bubbl.us - online brainstorming for free

Thoughtboxes - organize everything you do - great resource for education

Bubbl.us is a free, web application that allows you to brainstorm online. It is easy to use and you can use it to create mind maps, outlines of papers and projects, meeting notes, and much more. It's very basic. You just click on the page to add a box, enter information, connect it to another box and continue.

You can use it with or without creating an account. You can save, print and embed your files.

This is another great site to use with students for mind mapping, creating layouts to organize ideas, and much more.

Here's an example from Purdue University: