Bubbl.us is a free web service mind mapping tool that helps you to organize your thoughts and ideas. It is very simple to use thanks to the user-friendly interface that allows you to create bubbles and edit them with a few buttons. The mouse wheel helps you to drag into an empty space and pan around.

You are allowed to try the application before registering, but you must register if you want to save your work. Once you are done, there are a few options such as save your map as an image, print it, send it as a link in your emails or embed the code into your blog or website.

For more information on its usefulness in education, especially in language learning, you can visit the Creative English Lab which provides some examples and tips on how to integrate it within the classroom.