Alpha Microsystems Inc, Santa Ana, California has come out with a communications software product called Planet – as far as we know, unconnected with Racal Electronics’ version of the Cambridge Ring doubled – that integrates users existing and future personal computers to a file serving and resource sharing environment based upon an Alpha Micro processor running the proprietary Amos operating system. The Planet software is modular so that it can be tailored to specific needs, and prices go from $850 for a one-user version up to $3,250 for 64 users.