This interactive graphic organizer offers many diagramming options for teacher and student use. They include flowcharts, database diagrams, and network design – elements that are particularly useful in computer science. Cacoo also offers venn diagrams and concept mapping tools that can be used in any subject.
Free registration is required. The free version of Cacoo creates PNG images only, allows up to 6 pages and each page can have multiple diagrams. It also offers Google Drive integration.