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The first commercial time-sharing system,created by Dartmouth College and sold by General Electricaround 1967.GE's Information Service Divsion (ISD) marketed DTSS which wasrunning on a system called GE-265 (a combination of thefront-end processor the Datanet-30 and the GE-235).DTSS was ported (and significantly improved by GE ISD around1965-1966 on a combination of DN-30 and GE-635). Thisproprietary system, called Mk-II, later improved by GE andrenamed Mk-III, is still working today (1997) as part of theGE service bureau that also includes IBM and Unixcomputers.