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...

ZPL 1.1 Zope Public License (ZPL) Version 1.1 Copyright (c) Zope Corporation. All rights reserved. This license has been certified as open source. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Redistributions in source code must retain the above copyright notice, this list of conditions, and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions, and the following disclaimer in the documentation and/or other materials provided with the distribution. All advertising materials and documentation mentioning feature...

Note that this license is not endorsed by the Free Software Foundation. It is available here as a convenience to readers of the license list. DESIGN SCIENCE LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION Copyright © 1999-2001 Michael Stutz <stutz@dsl.org> Verbatim copying of this document is permitted, in any medium. 0. PREAMBLE. Copyright law gives certain exclusive rights to the author of a work, including the rights to copy, modify and distribute the work (the "reproductive," "adaptative," and "distribution" rights). The idea of "copyleft" is to willfully revoke the exclusivity of those rights under certain terms and conditions, so that anyone can copy and distribute the work ...

The Definition An open software service is one: Whose data is open as defined by the Open Knowledge Definition with the exception that where the data is personal in nature the data need only be made available to the user (i.e. the owner of that account). Whose source code is: Free/Open Source Software (that is available under a license in the OSI or FSF approved list — see note 3). Made available to the users of the service.

Copyright (c) 1998-2011 The OpenSSL Project. 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. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. All advertising materials mentioning features or use of this software must display the following acknowledgment: "This product includes software developed by the OpenSSL Project for us...

People : Open Source Enthusiasts

A collection of open source and copyleft license writers.

Craig, Philip A.

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