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.

Copyright (c) 1998, 1999, 2000 Thai Open Source Software Center Ltd 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, INCLUDING BUT NOT...

Copyright (C) 1996 X Consortium 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, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, ...

NASA OPEN SOURCE AGREEMENT VERSION 1.0 THIS OPEN SOURCE AGREEMENT ("AGREEMENT") DEFINES THE RIGHTS OF USE, REPRODUCTION, DISTRIBUTION, MODIFICATION AND REDISTRIBUTION OF CERTAIN COMPUTER SOFTWARE ORIGINALLY RELEASED BY THE UNITED STATES GOVERNMENT AS REPRESENTED BY THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION ("NASA"). ANYONE WHO USES, REPRODUCES, DISTRIBUTES, MODIFIES OR REDISTRIBUTES THE SUBJECT SOFTWARE, AS DEFINED HEREIN, OR ANY PART THEREOF, IS, BY THAT ACTION, ACCEPTING IN FULL THE RESPONSIBILITIES AND OBLIGATIONS CONTAINED IN THIS AGREEMENT. NASA Original Software Designation: _____________________________________ NASA Original Software Title: ___________________________________________ User Registration requested, ...

skyBuilders Open Source License Draft Version 1.1 Copyright (c) 1999-2002 skyBuilders.com, Inc. 77 Huron Avenue, Cambridge, MA 02138, USA. All rights reserved. (This license itself may be modified and adapted for non-skyBuilders purposes.) skyBuilders.com, Inc. and all Contributors hereby grant a world-wide, royalty-free, non-exclusive license, subject to third party intellectual property claims, to use, reproduce, modify, display, perform, sublicense and distribute this software (or portions thereof) with or without modifications, and/or as part of a larger work. Neither the name or trademarks of skyBuilders.com nor the names or trademarks of other Contributors may be used to endorse or promote products derived from this so...

The Zimbra Public License Version 1.1 ("ZPL") consists of the Mozilla Public License Version 1.1, modified to be specific to Zimbra, with the Additional Terms in Exhibit B. The original Mozilla Public License 1.1 can be found at: http://www.mozilla.org/MPL/MPL-1.1.html Zimbra Public License (ZPL) 1. Definitions. 1.0.1. "Commercial Use" means distribution or otherwise making the Covered Code available to a third party. 1.1. "Contributor" means each entity that creates or contributes to the creation of Modifications. 1.2. "Contributor Version" means the combination of the Original Code, prior Modi...

People : Open Source Enthusiasts

A collection of open source and copyleft license writers.

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