Similar to IBM_PC_DOS

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  IBSYS

  IBM 7090/94 IBSYS
  ▼-1 trends

  
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  Multiple Virtual Storage

  MVS
  
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  OS/2

  OS/2
  
• 

  OS/360

  OS/360 and successors
  
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  OS/390

  OS/390
  
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  SHARE OS

  SHARE Operating System
  
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  Taligent

  Taligent
  
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  Transaction Processing Facility

  Transaction Processing Facility
  
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  Z/VSE

  VSE (operating system)
  
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  Z/VM

  Z/VM
  
• 

  Z/OS

  Z/OS
  
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  LAN Server

  IBM LAN Server
  
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  Pilot (オペレーティングシステム)

  Pilot (operating system)
  
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  SQL/DS

  IBM SQL/DS
  
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  XENIX

  Xenix
  
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  Xinu

  Xinu
  
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  ATOK

  ATOK
  
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  カーミット (プロトコル)

  Kermit (protocol)