Similar to CB_UNIX

• 

  UNICOS

  UNICOS
  
• 

  UNIX/32V

  UNIX/32V
  
• 

  UP-UX

  
• 

  UX/4800

  
• 

  Version 6 Unix

  Version 6 Unix
  
• 

  Version 7 Unix

  Version 7 Unix
  
• 

  VisionOS

  VisionOS
  
• 

  WatchOS

  WatchOS
  
• 

  Xv6

  Xv6
  
• 

  OpenIndiana

  OpenIndiana
  
• 

  Sailfish OS

  Sailfish OS
  
• 

  Mac OS X v10.0

  Mac OS X 10.0
  
• 

  MINIX

  Minix
  
• 

  Linux

  Linux
  ▲2 trends

  
• 

  LynxOS

  LynxOS