This book constitutes the refereed proceedings of the 8th International Conference on Collaboration Technologies, CollabTech 2016, held in Kanazawa, Japan, in September 2016. The 16 revised full papers presented together with 4 short papers and a keynote were carefully reviewed and selected from 48 submissions. The papers focus on the following topics: cross-cultural collaboration; learning support systems; social networking; rescue and health support; real and virtual collaboration.

This book constitutes the refereed proceedings of the 9th International Conference on Collaboration Technologies, CollabTech 2017, held in Saskatoon, SK, Canada, in August 2017.The 10 revised full papers presented in this book together with 6 short papers were carefully reviewed and selected from 37 submissions.