Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. CoSy was an early computer conferencing system developed by the University of Guelph in 1983 and 1984. CoSy was selected by Byte Magazine to launch their BIX system in 1985. In addition to BIX, it was used to implement a similar British system named CIX, as well as numerous other installations such as CompuLink Network. CoSy was also chosen for The Open University's "electronic campus". Some rights to the software were later acquired by the British Columbia company SoftWords, who developed it into CoSy400 and added a simple web interface, before losing interest.

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