DroidDia allows you to draw flow charts, org charts, Venn diagrams, mind maps, and other diagrams. The user interface is based on picking objects from a gallery and dragging them into place. You can create a new object by long-pressing on a blank screen area and select an existing object by long-pressing on the object. DroidDia supports using JPEG and PNG bitmaps as the basis for objects in addition to using simple geometric shapes, and it supports creating custom image libraries. You can download a library of Cisco components in PNG form from the DroidDia.com website, converted from Cisco's EPS files.