I have been involved in the development of many software systems over the years, only a small number of which are described here. "System" has a very broad meaning that is not simply a downloadable tool or implementation. System refers to a socio-technical system, where a tool and the community that designs and uses the tool are inexorably intertwined.

Current and Ongoing Work

• Disaster Dynamics prototypes
• CU Course Swikis
• The Envisionment and Discovery Collaboratory (EDC)

Previous Work

• The Behavior Exchange
• CU WRITE
• micro-Agentsheets