The 58 revised full papers presented were carefully reviewed and selected from numerous submissions. The papers focus on two main aspects: 1. Cooperation in the software development process, addressing topics such as the development of shared mental models; tools for shared projects; sharing links for cross-media information spaces; and sharing resources and transfer of knowledge among team members. 2. The variety of cooperative software products, ranging from cooperative support for music creation; cooperative process management systems; cooperative visualization systems for geographic information; cooperative cultural information sharing platforms; cooperative reasoning systems; cooperative sensor networks for environment monitoring; to remote cooperative video vehicle monitoring systems.