Diagram.ly

 Diagram.ly
Just discovered this one and it’s already my favorite. Easy to use (really) drag and drop interface. Intuitive tool bar. Decent amount of shapes, lines, and clip art. You have the ability to right-click on any shapes for editing options.**__ Diagram.ly __** has a very Microsoft feel to it so if you have students who are used to using Office products, the learning curve with **__ Diagram.ly __**will be easy. Another great feature is that there is no sign up, no registration and no download. You simply create your mind map and save (.xml, .jpg, .png, or .svg).