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 "No problem Bugroff" license. Richard Stallman of the Free Software Foundation devised, in addition to some marvelous software, the GNU General Public License (GPL for short). Or the CopyLeft it is sometimes called. It is quite a revolutionary document, using the "copyright" tool to to protect your right to use free software. Unfortunately using copyright to protect free software is a lot like using a Jackal to guard the hens. In fact, various inconveniences relating to this have resulted in modifications such as the LGPL (Library General Public License) and more recently the NPL (Netscape Public License) I call these matters mere inconveniences, the real damage will occur when the Jackal's, (sorry, I mean lawye...

Tcl/Tk License Terms This software is copyrighted by the Regents of the University of California, Sun Microsystems, Inc., Scriptics Corporation, and other parties. The following terms apply to all files associated with the software unless explicitly disclaimed in individual files. The authors hereby grant permission to use, copy, modify, distribute, and license this software and its documentation for any purpose, provided that existing copyright notices are retained in all copies and that this notice is included verbatim in any distributions. No written agreement, license, or royalty fee is required for any of the authorized uses. Modifications to this software may be copyrighted by their authors and need not follow the lice...

SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) Copyright (C) [dates of first publication] Silicon Graphics, Inc. All Rights Reserved. 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 including the dates of first publication and either this permission notice or a reference to http://oss.sgi.com/projects/FreeB/ shall ...

DRAFT Sybase Open Watcom Public License version 2.0 USE OF SOFTWARE DESIGNATED AS SUBJECT TO THE SYBASE OPEN WATCOM PUBLIC LICENSE ("SOFTWARE") IS SUBJECT TO THE TERMS AND CONDITIONS OF THE LICENSE AGREEMENT SET FORTH BELOW (“LICENSE”). YOU MAY NOT USE THE SOFTWARE IN ANY MANNER UNLESS YOU ACCEPT THE TERMS AND CONDITIONS OF THE LICENSE. YOU INDICATE YOUR ACCEPTANCE BY IN ANY MANNER USING (INCLUDING WITHOUT LIMITATION BY REPRODUCING, MODIFYING OR DISTRIBUTING) THE SOFTWARE. IF YOU DO NOT ACCEPT ALL OF THE TERMS AND CONDITIONS OF THE LICENSE, DO NOT USE THE SOFTWARE IN ANY MANNER. 1. Application; Definitions. This License applies to any Original Code (defined below) so designated by the original licensor and any Modifica...

Cube game engine source code, 20 dec 2003 release. Copyright (C) 2001-2003 Wouter van Oortmerssen. This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. 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. 2. Altered source versions m...

People : Open Source Enthusiasts

A collection of open source and copyleft license writers.

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