Cozimo is a graphics editing and collaborating tool. It can be used to create work groups, which allow users to work together in order to edit content. While Cozimo is great on collaboration and communication, it can be fairly limited in its editing capabilities. The photo editing options are fairly limited to shapes, colors, and other basic concepts.

Users create account and can upload a limited amount of content to collaborate with their peers upon. Edits done to an image show up in real time on the other users computer. For instance, if I were to create a box, it would show up instantly on anyone else collaborating on the project.

The site has a tutorial on how to use Cozimo at http://www.cozimo.com/help#overview