4xFreedoms | Open Source Hardware and Design Alliance

Freedom 0: The freedom to use the device for any purpose.<br />
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Freedom 1: The freedom to study how the device works and change it to make it to do what you wish. Access to the complete design is precondition to this.<br />
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Freedom 2: Redistribute the device and/or design (remanufacture).<br />
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Freedom 3: The freedom to improve the device and/or design, and release your improvements (and modified versions in general) to the public, so that the whole community benefits. Access to the complete design is precondition to this.