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 1995 by Wietse Venema. All rights reserved. Some individual files may be covered by other copyrights. This material was originally written and compiled by Wietse Venema at Eindhoven University of Technology, The Netherlands, in 1990, 1991, 1992, 1993, 1994 and 1995. Redistribution and use in source and binary forms, with or without modification, are permitted provided that this entire copyright notice is duplicated in all such copies. This software is provided "as is" and without any expressed or implied warranties, including, without limitation, the implied warranties of merchantibility and fitness for any particular purpose.

Secure Messaging Protocol (SMP) Libraries [ACL, CML, SFL] Distribution Rights All source code for the SMP is being provided at no cost and with no financial limitations regarding its use and distribution. Organizations can use the SMP without paying any royalties or licensing fees. The SMP was originally developed by the U.S. Government. BAE Systems is enhancing and supporting the SMP under contract to the U.S. Government. The U.S. Government is furnishing the SMP software at no cost to the vendor subject to the conditions of the SMP Public License provided with the SMP software. 29 May 2002 Secure Messaging Protocol (SMP) Public License The United States Government/Department of Defense/National Security Agency/Office of Ne...

GNU Free Documentation License Version 1.1, March 2000 Copyright (C) 2000 Free Software Foundation, Inc. 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. 0. PREAMBLE The purpose of this License is to make a manual, textbook, or other written document "free" in the sense of freedom: to assure everyone the effective freedom to copy and redistribute it, with or without modifying it, either commercially or noncommercially. Secondarily, this License preserves for the author and publisher a way to get credit for their work, while not being considered responsible for modifications made by others. Thi...

Reciprocal Public License (RPL-1.5) Version 1.5, July 15, 2007 Copyright (C) 2001-2007 Technical Pursuit Inc., All Rights Reserved. PREAMBLE The Reciprocal Public License (RPL) is based on the concept of reciprocity or, if you prefer, fairness. In short, this license grew out of a desire to close loopholes in previous open source licenses, loopholes that allowed parties to acquire open source software and derive financial benefit from it without having to release their improvements or derivatives to the community which enabled them. This occurred any time an entity did not release their application to a "third party". While there is a certain freedom in this model of licensing, it struck the authors of the RPL as being unfai...

European Union Public Licence V.1.0 EUPL (c) the European Community 2007 This European Union Public Licence (the “EUPL”) applies to the Work or Software (as defined below) which is provided under the terms of this Licence. Any use of the Work, other than as authorised under this Licence is prohibited (to the extent such use is covered by a right of the copyright holder of the Work). The Original Work is provided under the terms of this Licence when the Licensor (as defined below) has placed the following notice immediately following the copyright notice for the Original Work: Licensed under the EUPL V.1.0 or has expressed by any other mean his willingness to license under the EUPL. 1. Definitions ...

People : Open Source Enthusiasts

A collection of open source and copyleft license writers.

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