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 program, "bzip2", the associated library "libbzip2", and all documentation, are copyright (C) 1996-2010 Julian R Seward. 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. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 3. Altered source versions must be plainly marked as such, and...

The X.Net, Inc. License Copyright (c) 2000-2001 X.Net, Inc. Lafayette, California, USA Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,...

The Cougaar Open Source License Agreement Copyright (c) 1999-2002 The Cougaar Group. All rights reserved.  This Cougaar Open Source License Agreement (the 'Agreement') sets forth the terms and conditions under which the Cougaar Software (as defined below), sponsored by the Defense Advanced Research Agency, will be licensed by BBNT Solutions, LLC ('BBN') or other identified copyright holder called ('Licensor') to you ('Licensee' or 'You'), and under which Derivative Works (as defined below) of Cougaar Software will be licensed by Licensee to Licensor and the Cougaar Group.  Definitions:   'Cougaar Software' means the Cognitive Agent Architecture software originally created and released by Licensor under this Agreement.  '...

Creative Commons Corporation (“Creative Commons”) is not a law firm and does not provide legal services or legal advice. Distribution of Creative Commons public licenses does not create a lawyer-client or other relationship. Creative Commons makes its licenses and related information available on an “as-is” basis. Creative Commons gives no warranties regarding its licenses, any material licensed under their terms and conditions, or any related information. Creative Commons disclaims all liability for damages resulting from their use to the fullest extent possible. Using Creative Commons Public Licenses Creative Commons public licenses provide a standard set of terms and conditions that creators and other right...

Microsoft Reciprocal License (Ms-RL)This license governs use of the accompanying software. If you use the software, you accept this license. If you do not accept the license, do not use the software.DefinitionsThe terms "reproduce," "reproduction," "derivative works," and "distribution" have the same meaning here as under U.S. copyright law. A "contribution" is the original software, or any additions or changes to the software. A "contributor" is any person that distributes its contribution under this license. "Licensed patents" are a contributor's patent claims that read directly on its contribution.Grant of Rights(A) Copyright Grant- Subject to the terms of this license, including the license conditions and limitations in se...

People : Open Source Enthusiasts

A collection of open source and copyleft license writers.

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