Collaboration Technologies and Social Computing

This book constitutes the proceedings of the 31st International Conference on Collaboration Technologies and Social Computing, CollabTech 2025, held in Jakarta, Indonesia, during November 4–7, 2025.The 12 full and 8 short papers presented in this volume were carefully reviewed and selected from 50 submissions. They are grouped into the following topics: Collaborative Learning and Group Interaction; Technology-Mediated Communication and Online Environments; AI in Education: LLMs and Content Generation; Social Interaction, Community and Public Spaces; Systems for Supporting Discourse and Understanding.