Cacoo is a user friendly online drawing web application that you can create a variety of diagrams such as site maps, wire frames, UML and network charts quickly. Cacoo has an element library of diagrams and icons you can just drag and drop to create site maps, flow charts, UML diagrams and mind maps. You can easily align them to each other, connect them with lines and arrows, and easily rearrange them. Cacoo is also a real time collaborating tool that supports multiple users so you can edit and share your diagrams with other members. Simply invite friends by providing their email addresses and Cacoo will let them view and edit your diagrams like insert text and images as well. You can also export your creations as PNG format or embed them into your blogs and websites directly. Right now the service is free of charge and support various modern browsers such as IE 7+, Safari 4+, Firefox 3+, and Chrome 2+. Check out the video below to see how Cacoo works.

• http://cacoo.com/