Collaborative Applications and Group Interaction -- Task Analysis Based Methodology for the Design of Face to Face Computer Supported Collaborative Learning Activities -- Group Creativity and Collaborative Technologies: Understanding the Role of Visual Anonymity -- InClass-RTD: Providing Support for Real-Time Threaded Discussions in the Classroom -- Technical and Environmental Challenges of Collaboration Engineering in Distributed Environments -- Monitoring and Analyzing Group Interactions in Asynchronous Discussions with the DIAS System -- Analyzing Shared Workspaces Design with Human-Performance Models -- Group Awareness -- Using Email-Based Network Analysis to Determine Awareness Foci -- Cooperation Indexes to Support Workspace Awareness -- Guidelines and Usability Principles to Design and Test Shared-Knowledge Awareness for a CSCL Interface -- Computer Supported Collaborative Learning -- The Remote Control Approach – How to Apply Scaffolds to Existing Collaborative Learning Environments -- Polyphonic Support for Collaborative Learning -- On Supporting Users’ Reflection During Small Groups Synchronous Collaboration -- Interaction Analysis for the Detection and Support of Participatory Roles in CSCL -- Languages and Tools Supporting Collaboration -- ORCHESTRA: Formalism to Express Mobile Cooperative Applications -- A Decentralized and Flexible Tool Supporting Extreme Programming Software Development -- The PoEML Proposal to Model Services in Educational Modeling Languages -- Groupware Development Frameworks and Toolkits -- A Framework Designed for Synchronous Groupware Applications in Heterogeneous Environments -- Implicit Plasticity Framework: A Client-Side Generic Framework for Collaborative Activities -- Supporting Mobile Collaboration with Service-Oriented Mobile Units -- SAGA: A Web Services Architecture for Groupware Applications -- Towards a P2P-Based Active e-Learning Space -- Understanding the Trade-Offs of Blending Collaboration Services in Support of Contextual Collaboration -- Collaborative Workspaces -- Leveraging the Linda Coordination Model for a Groupware Architecture Implementation -- Development of Groupware Based on the 3C Collaboration Model and Component Technology -- Ontoolcole: An Ontology for the Semantic Search of CSCL Services -- Web-Based Cooperative Environments -- CSCL, Anywhere and Anytime -- Web Management of Citizens’ Complaints and Suggestions -- Social Visualization Encouraging Participation in Online Communities -- Mobile Collaborative Work -- Analyzing the Roles of PDA in Meeting Scenarios -- Supporting the Management of Multiple Activities in Mobile Collaborative Working Environments -- Seamless Interaction Among Heterogeneous Devices in Support for Co-located Collaboration -- Collaborative Design -- Predicting User Interest Region for Collaborative Graphics Design Systems in Ubiquitous Environment -- A Conceptual and Methodological Framework for Modeling Interactive Groupware Applications -- Collaborative Design and Tailoring of Web Based Learning Environments in CURE.

This book constitutes the refereed proceedings of the 12th International Workshop on Groupware, CRIWG 2006, held in Medina del Campo, Spain, in September 2006. The 21 revised full papers and 13 revised short papers presented were carefully reviewed and selected from 99 submissions. The papers are organized in topical sections on collaborative applications and group interaction, group awareness, computer supported collaborative learning, languages and tools supporting collaboration, groupware development frameworks and toolkits, collaborative workspaces, web-based cooperative environments, mobile collaborative work, and collaborative design.