• AIX: Information from Answers.com
  (Advanced Interactive eXecutive) IBM's Unix-based operating system which runs on its Intellistation workstations and pSeries, p5, iSeries and i5 server families. Originally based on AT&T's Unix System V with Berkeley extensions, it conforms to the Open Group's UNIX 98 Base Brand industry standard. In the past, AIX has also been available on other IBM platforms, including the RT and PC.
  AIX ( A dvanced I nteractive e X ecutive) IBM's Unix-based operating system which runs on its Intellistation workstations and pSeries, p5, iSeries and
  aix information reference
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• Citrix Presentation Server: Information from Answers.com
  Software from Citrix that provides a timeshared, multiuser environment for Unix and Windows servers.
  Citrix Presentation Server Software from Citrix that provides a timeshared, multiuser environment for Unix and Windows servers
  citrix information presentation reference server
  in About Technology with citrix multiuser software sw timeshared unix windows

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