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Racket software and documentation is distributed under the GNU Lesser General Public License (LGPL). This means

See "COPYING_LESSER.txt" in your Racket installation’s "lib" directory for more information.


  Copyright (c) 2010-2018 PLT Design Inc.

Racket software includes or extends the following copyrighted material:


  Copyright (c) 1994 Brent Benson

  All rights reserved.

  Conservative garbage collector

  Copyright (c) 1988, 1989 Hans-J. Boehm, Alan J. Demers

  Copyright (c) 1991-1996 Xerox Corporation

  Copyright (c) 1996-1999 Silicon Graphics

  Copyright (c) 1999-2005 Hewlett-Packard Development Company, L.P.

  All rights reserved.

  Collector C++ extension by Jesse Hull and John Ellis

  Copyright (c) 1994 Xerox Corporation

  All rights reserved.

  GNU MP Library

  Copyright (c) 1991, 1992, 1993, 1994, 1996, 1999, 2000, 2007

  Free Software Foundation, Inc.

  GNU lightning

  Copyright (c) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2011

  Free Software Foundation, Inc.


  Copyright (c) 2003-2005 Hewlett-Packard Development Company, L.P.

See also other "LICENSE.txt" files in your distribution or packages.