Open Mind is one of the free brainstorming and mind mapping softwares that creates customizable mind maps for the users. You can set the bubbles to one of the three data types : text, image or YouTube video. Text can be set to different fonts, color and size and you can create a bold heading or a smaller bubble. You can either copy the images from clipboard or you can simply enter the web address of the image. All the files you create with this software can be exported as image files so that you can print or share them. You can even set YouTube videos.