Closed source software

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Closed source is a term for software released or distributed without the corresponding source code.[1] Generally, it means only the binaries of a computer program are distributed and the license provides no access to the program's source code. The source code of such programs might be regarded as a trade secret of the company. Access to source code by third parties commonly requires the party to sign a non-disclosure agreement. The term is widely used by the media.[2][3][4][5][6][7][8][9][10][11][12] Examples of freeware closed source software include Adobe Reader and Skype, examples of commercial software closed source include Microsoft Office 2010 and WinRAR.

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