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Free and open-source software

software that is both free (as in freedom) and open source

Free and open source software (for short: FOSS, means free software and/or open source software) is software whose source code is open and available to anyone who wishes to:

  • improve it,
  • study it,
  • modify it, and
  • share the original and the modifications with others.

These additional rights are generally granted to the user through the GPL, LGPL, or BSD license.

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