Welcome to CopyLeftLicense.com! Here you will find an archive of all the copyleft and open source licenses that have been published in the past. From Beerware Licensing, where you need to buy a beer for the open source programmer if you see them in a bar, to the fine-tuned and legally-curated Berkeley Software Distribution (BSD) License, we have it all. By knowing where we've come from, we might be able to learn where to go!

This archive contains 729 texts, with 682,528 words or 4,889,496 characters.

Licenses : Open Source and CopyLeft Licenses

A collection of open source and copyleft licenses.

The agreement below gives the TeX Users Group (TUG) the right to sublicense, and grant such sublicensees the right to further sublicense, any or all of the rights enumerated below. TUG hereby does so sublicense all such rights, irrevocably and in perpetuity, to any and all interested parties. --Karl Berry, TUG President, on behalf of the TeX Users Group board and members 17 November 2006 http://tug.org/fonts/utopia ------------------------------------------------------------ October 11, 2006 RE: License to TeX Users Group for the Utopia Typeface Adobe Systems Incorporated ("Adobe") hereby grants to the TeX Users Group and its members a nonexclusive, royalty-free, perpetual license to the typeface software for the Ut...

Computer Associates Trusted Open Source LicenseVersion 1.1 PLEASE READ THIS DOCUMENT CAREFULLY AND IN ITS ENTIRETY. THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS COMPUTER ASSOCIATES TRUSTED OPEN SOURCE LICENSE ("LICENSE"). ANY USE, REPRODUCTION, MODIFICATION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES THE RECIPIENT'S ACCEPTANCE OF THIS LICENSE. License Background Computer Associates International, Inc. (CA) believes in open source. We believe that the open source development approach can take appropriate software programs to unprecedented levels of quality, growth, and innovation. To demonstrate our continuing commitment to open source, we are releasing the Program (as defined below) under this License. T...

A. HISTORY OF THE SOFTWARE ========================== Python was created in the early 1990s by Guido van Rossum at Stichting Mathematisch Centrum (CWI, see http://www.cwi.nl) in the Netherlands as a successor of a language called ABC. Guido remains Python's principal author, although it includes many contributions from others. In 1995, Guido continued his work on Python at the Corporation for National Research Initiatives (CNRI, see http://www.cnri.reston.va.us) in Reston, Virginia where he released several versions of the software. In May 2000, Guido and the Python core development team moved to BeOpen.com to form the BeOpen PythonLabs team. In October of the same year, the PythonLabs team moved to Digital Creations (now Zope ...

Permission to use, copy, and distribute this software and its documentation for any purpose with or without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. Permission to modify the software is granted, but not the right to distribute the complete modified source code. Modifications are to be distributed as patches to the released version. Permission to distribute binaries produced by compiling modified sources is granted, provided you 1. distribute the corresponding source modifications from the released version in the form of a patch file along with the binaries, 2. add special version identif...

European Union Public Licence V. 1.1 EUPL (c) the European Community 2007 This European Union Public Licence (the "EUPL") applies to the Work or Software (as defined below) which is provided under the terms of this Licence. Any use of the Work, other than as authorised under this Licence is prohibited (to the extent such use is covered by a right of the copyright holder of the Work). The Original Work is provided under the terms of this Licence when the Licensor (as defined below) has placed the following notice immediately following the copyright notice for the Original Work: Licensed under the EUPL V.1.1 or has expressed by any other mean his willingness to license under the EUPL. 1. Definitions In this Licence,...

People : Open Source Enthusiasts

A collection of open source and copyleft license writers.

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