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.

3DFX GLIDE Source Code General Public License 1. PREAMBLE This license is for software that provides a 3D graphics application program interface (API).The license is intended to offer terms similar to some standard General Public Licenses designed to foster open standards and unrestricted accessibility to source code. Some of these licenses require that, as a condition of the license of the software, any derivative works (that is, new software which is a work containing the original program or a portion of it) must be available for general use, without restriction other than for a minor transfer fee, and that the source code for such derivative works must likewise be made available. The only restriction is that such de...

The source code in this package is copyright 1999-2010 by Andrew Plotkin. You may copy and distribute it freely, by any means and under any conditions, as long as the code and documentation is not changed. You may also incorporate this code into your own program and distribute that, or modify this code and use and distribute the modified version, as long as you retain a notice in your program or documentation which mentions my name and the URL shown above.

Copyright (c) 1996 - 2015, Daniel Stenberg, >daniel@haxx.se<. All rights reserved. Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE ...

Copyright (C) 1995 by Donald Arseneau This file may be freely transmitted and reproduced, but it may not be changed unless the name is changed also (except that you may freely change the paper-size option for \documentclass).

CeCILL-B FREE SOFTWARE LICENSE AGREEMENT Notice This Agreement is a Free Software license agreement that is the result of discussions between its authors in order to ensure compliance with the two main principles guiding its drafting: firstly, compliance with the principles governing the distribution of Free Software: access to source code, broad rights granted to users, secondly, the election of a governing law, French law, with which it is conformant, both as regards the law of torts and intellectual property law, and the protection that it offers to both authors and holders of the economic rights over software. The authors of the CeCILL-B1 license are: Commissariat à l'Energie Atomique - ...

People : Open Source Enthusiasts

A collection of open source and copyleft license writers.

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