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.

THIS LICENSE IS APPROVED FOR GENERAL USE. PERMISSION TO DISTRIBUTE THIS LICENSE IS MADE BY WIZARDS OF THE COAST! OPEN GAME LICENSE Version 1.0a The following text is the property of Wizards of the Coast, Inc. and is Copyright 2000 Wizards of the Coast, Inc ("Wizards"). All Rights Reserved. 1. Definitions: (a)"Contributors" means the copyright and/or trademark owners who have contributed Open Game Content; (b)"Derivative Material" means copyrighted material including derivative works and translations (including into other computer languages), potation, modification, correction, addition, extension, upgrade, improvement, compilation, abridgment or other form in which an existing work may be recast, transformed or adapted; ...

Reciprocal Public License (RPL-1.5) Version 1.5, July 15, 2007 Copyright (C) 2001-2007 Technical Pursuit Inc., All Rights Reserved. PREAMBLE The Reciprocal Public License (RPL) is based on the concept of reciprocity or, if you prefer, fairness. In short, this license grew out of a desire to close loopholes in previous open source licenses, loopholes that allowed parties to acquire open source software and derive financial benefit from it without having to release their improvements or derivatives to the community which enabled them. This occurred any time an entity did not release their application to a "third party". While there is a certain freedom in this model of licensing, it struck the authors of the RPL as being unfai...

Copyright (c) 1995-2012 by Arkkra Enterprises. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following DISCLAIMER. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following DISCLAIMER in the documentation and/or other materials provided with the distribution. 3. Any additions, deletions, or changes to the original files must be clearly indicated in accompanying documentation. including the reasons for the changes, and the names of those who made the ...

Preamble:  This license aims at specifying the legal conditions of the re-use of public information that is freely reusable.  It particularly specifies the rights to adapt the public information with a view to a commercial activity or not. The rights conceded by the present license do not imply any transfer of property right on the public information.  It aims at facilitating the re-use of public information in the context of the development of the information society.  According to Article 8 of the 17th November 2003 2003/98/CE directive “The state institutions may authorize the re-use of documents without any conditions or may impose conditions, possibly by the means of a license which would deal with relevant questions. Th...

RECIPROCAL PUBLIC LICENSE Version 1.3, February 1, 2006 Copyright (C) 2001-2006 Technical Pursuit Inc., All Rights Reserved. PREAMBLE This Preamble is intended to describe, in plain English, the nature, intent, and scope of this License. However, this Preamble is not a part of this License. The legal effect of this License is dependent only upon the terms of the License and not this Preamble. This License is based on the concept of reciprocity. In exchange for being granted certain rights under the terms of this License to Licensor's Software, whose Source Code You have access to, You are required to reciprocate by providing equal access and rights to all third parties to the Source Code of any Modifications,...

People : Open Source Enthusiasts

A collection of open source and copyleft license writers.

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