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.

OPaC Free Public License Copyright © 1997-1998, OPaC bright ideas, Suscévaz, Switzerland. All rights reserved. OPaC bright ideas (the "Licenser") is the owner of a computer software program known as the OPaC Class Library ("OPaC"). The OPaC Free Public License (this "License") applies to OPaC and to any translation or modification of this software program ("Derivative Works"). Hereinafter, translation is included without limitation in the term "modification". Each licensee is addressed as "you". "Program" will refer to any work that you distribute or publish, that in whole or in part contains or is derived from OPaC or any part thereof. OPaC is a copyrighted work whose copyright is held by the Licenser. By m...

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...

The FreeCard exception from the GPL If you intend to contribute to FreeCard, you have to place your contribution either under the GNU General Public License (GPL) or the GNU Lesser General Public License (LGPL). The best way to do this is to add the following notice to your contribution's readme file or add it as a comment to the start of any source code files you may be submitting: is (c) Copyright by . It is free software; you can distribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. As a special exception, you may publish an integrated combin...

NonCommercial-ShareAlike 1.0 CREATIVE COMMONS CORPORATION IS NOT A LAW FIRM AND DOES NOT PROVIDE LEGAL SERVICES. DISTRIBUTION OF THIS DRAFT LICENSE DOES NOT CREATE AN ATTORNEY-CLIENT RELATIONSHIP. CREATIVE COMMONS PROVIDES THIS INFORMATION ON AN "AS-IS" BASIS. CREATIVE COMMONS MAKES NO WARRANTIES REGARDING THE INFORMATION PROVIDED, AND DISCLAIMS LIABILITY FOR DAMAGES RESULTING FROM ITS USE. License THE WORK (AS DEFINED BELOW) IS PROVIDED UNDER THE TERMS OF THIS CREATIVE COMMONS PUBLIC LICENSE ("CCPL" OR "LICENSE"). THE WORK IS PROTECTED BY COPYRIGHT AND/OR OTHER APPLICABLE LAW. ANY USE OF THE WORK OTHER THAN AS AUTHORIZED UNDER THIS LICENSE IS PROHIBITED. BY EXERCISING ANY RIGHTS TO THE WORK PROVID...

Open Publication License v1.0, 8 June 1999 I. REQUIREMENTS ON BOTH UNMODIFIED AND MODIFIED VERSIONS The Open Publication works may be reproduced and distributed in whole or in part, in any medium physical or electronic, provided that the terms of this license are adhered to, and that this license or an incorporation of it by reference (with any options elected by the author(s) and/or publisher) is displayed in the reproduction. Proper form for an incorporation by reference is as follows: Copyright (c) by

People : Open Source Enthusiasts

A collection of open source and copyleft license writers.

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