OPEN SOURCE

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Across
  1. 1. computer software that can be classified as both free software and open-source software.
  2. 3. software that is available free of charge
  3. 4. Specifications for hardware or software that are controlled by one company.
  4. 6. a script language and interpreter that is freely available and used primarily on Linux Web servers
  5. 7. an open-source operating system modelled on UNIX.
Down
  1. 2. software that is available free of charge and often distributed informally for evaluation, after which a fee may be requested for future use.
  2. 4. a high-level general-purpose programming language.
  3. 5. is the world's most widely used web server software.