DATAPAC System manager System 7 (disambiguation) Gerard O'Kane Public data network Multiuser DOS Alex (videotex service) List of assigned /8 IPv4 address blocks John Tennyson Mark Lynch (Gaelic footballer) MS-DOS 4.0 (multitasking) Ryan Cup Jeff Lawrence (entrepreneur) Fergal Maher Cup Delphi (online service) Telenet List of mergers and acquisitions by Citrix DOS API X.25 List of operating systems NAPLPS Viewtron Robert Temple Booksellers Telidon IBM TopView Tymnet Internet in Canada Packet switching Trench Cup Akademset Bell MTS Protocol Wars Citrix Systems Digital Research Data General Videotex …

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