Software development is essentially a human activity. As a result, factors affecting the behavior of those involved in the development process are of great importance to the software community. We identify three levels at which behavioral factors associated with software development can be investigated: individual behavior, team behavior and organizational behavior. Analysis of studies on individual and team behavior in software development environments reveals the failure of existing tools in supporting team-based software development. Our survey on team practices among software professionals also confirms this fact. To address this situation we propose a software development environment based on a blackboard architecture that supports multi-agent, opportunistic problem-solving. We expect that this architecture holds promise for the next generation software tools by providing a kernel for team-based software development.