Popplet is a wonderful engaging web tool and iPad app that allows for a collaborative mind-mapping experience. With lots of great features, a slick interface, and easy to use note-taking or organizing tool. This is a full-featured site that can be used with multiple subjects and for myriad. Popplet is the simplest tool to capture and organize your ideas. With Popplet you can quick jot down your ideas and sort them visually.