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Wikipedia states:
Open-source software (OSS) is computer software with its source code made available and licensed with a license
      in which the copyright holder provides the rights to study, change and distribute the software to anyone and for any purpose.
       Open-source software is very often developed in a public, collaborative manner.
Open-source software is the most prominent example of open-source development and often compared to
      (technically defined) user-generated content or (legally defined) open-content movements.
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