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) 1991-2, RSA Data Security, Inc. Created 1991. All rights reserved. License to copy and use this software is granted provided that it is identified as the "RSA Data Security, Inc. MD5 Message-Digest Algorithm" in all material mentioning or referencing this software or this function. License is also granted to make and use derivative works provided that such works are identified as "derived from the RSA Data Security, Inc. MD5 Message-Digest Algorithm" in all material mentioning or referencing the derived work. RSA Data Security, Inc. makes no representations concerning either the merchantability of this software or the suitability of this software for any particular purpose. It is provided "as is" without expres...

RECIPROCAL PUBLIC LICENSE Version 1.1, November 1, 2002 Copyright (C) 2001-2002 Technical Pursuit Inc., All Rights Reserved. PREAMBLE This Preamble is intended to describe, in plain English, the nature, intent, and scope of this License. However, this Preamble is not a part of this License. The legal effect of this License is dependent only upon the terms of the License and not this Preamble. This License is based on the concept of reciprocity. In exchange for being granted certain rights under the terms of this License to Licensor's Software, whose Source Code You have access to, You are required to reciprocate by providing equal access and rights to all third parties to the Source Code of any Modifications, ...

Copyright (c) 1998, 1999 Henry Spencer. All rights reserved. Development of this software was funded, in part, by Cray Research Inc., UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics Corporation, none of whom are responsible for the results. The author thanks all of them. Redistribution and use in source and binary forms - with or without modification - are permitted for any purpose, provided that redistributions in source form retain this entire copyright notice and indicate the origin and nature of any modifications. I'd appreciate being given credit for this package in the documentation of software which uses it, but that is not a requirement. THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLI...

# Open Works License This is version 0.4 of the Open Works License. ## Terms Permission is hereby granted by the copyright holder(s), author(s), and contributor(s) of this work, to any person who obtains a copy of this work, in any form, to reproduce, modify, distribute, publish, sell, use, or otherwise deal in the licensed material without restriction, provided the following conditions are met: 1. Redistributions must retain this list of conditions and the following disclaimer. 2. Redistributions must retain any applicable notices of attribution and copyright. 3. This license does not grant permission to use the trade names, trademarks, service marks, product names, or other identifications used by the licensor except as...

MICROSOFT SHARED SOURCE CLI, C#, AND JSCRIPT LICENSE This License governs use of the accompanying Software, and your use of the Software constitutes acceptance of this license. You may use this Software for any non-commercial purpose, subject to the restrictions in this license. Some purposes which can be non-commercial are teaching, academic research, and personal experimentation. You may also distribute this Software with books or other teaching materials, or publish the Software on websites, that are intended to teach the use of the Software. You may not use or distribute this Software or any derivative works in any form for commercial purposes. Examples of commercial purposes would be running business operations, licensing, l...

People : Open Source Enthusiasts

A collection of open source and copyleft license writers.

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