CopyLeft License : Every Open Source License

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 Software shall be used for Good, not Evil." (From : JSON License.)

Copyright (c) 1995, 1996 Xerox Corporation. All Rights Reserved. Use and copying of this software and preparation of derivative works based upon this software are permitted. Any copy of this software or of any derivative work must include the above copyright notice of Xerox Corporation, this paragraph and the one after it. Any distribution of this software or derivative works must comply with all applicable United States export control laws. This software is made available AS IS, and XEROX CORPORATION DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND NOTWITHSTANDING ANY OTHER PROVISION CONTAINED HEREIN, ANY LIABILITY FOR DAMAGES...

GL2PS LICENSE Version 2, November 2003 Copyright (C) 2003, Christophe Geuzaine Permission to use, copy, and distribute this software and its documentation for any purpose with or without fee is hereby granted, provided that the copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. Permission to modify and distribute modified versions of this software is granted, provided that: 1) the modifications are licensed under the same terms as this software; 2) you make available the source code of any modifications that you distribute, either on the same media as you distribute any executable or other form of this software, or via a mechanism generally a...

ZPL 2.0 Zope Public License (ZPL) Version 2.0 This software is Copyright (c) Zope Corporation (tm) and Contributors. All rights reserved. This license has been certified as open source. It has also been designated as GPL compatible by the Free Software Foundation (FSF). Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Redistributions in source code must retain the above copyright notice, this list of conditions, and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions, and the following disclaimer in the documentati...

COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.1 1. Definitions. 1.1. “Contributor” means each individual or entity that creates or contributes to the creation of Modifications. 1.2. “Contributor Version” means the combination of the Original Software, prior Modifications used by a Contributor (if any), and the Modifications made by that particular Contributor. 1.3. “Covered Software” means (a) the Original Software, or (b) Modifications, or (c) the combination of files containing Original Software with files containing Modifications, in each case including portions thereof. 1.4. “Executable” means the Covered Software in any form other than Source Code. 1.5. ...

People : Open Source Enthusiasts

A collection of open source and copyleft license writers.

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