Collaborative applications

Abstract

Several useful collaboration applications have been developed recently that go beyond the email, bulletin board, videoconferencing, and instant messaging systems in use today. They provide novel support for threading in mail, chat, and bulletin boards; temporal ordering of chat conversations; graphical, mediated, and synchronous chat; variable-grained, multimedia annotations; document-based notifications; automatic presence, location, and availability identification; automatic camera placement and video construction in lecture presentations and discussion groups; and compression and browsing of stored video.