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.

AMENDMENTS The Netscape Public License Version 1.1 ("NPL") consists of the Mozilla Public License Version 1.1 with the following Amendments, including Exhibit A-Netscape Public License.  Files identified with "Exhibit A-Netscape Public License" are governed by the Netscape Public License Version 1.1. Additional Terms applicable to the Netscape Public License. I. Effect. These additional terms described in this Netscape Public License -- Amendments shall apply to the Mozilla Communicator client code and to all Covered Code under this License. II. ''Netscape's Branded Code'' means Covered Code that Netscape distributes and/or permits others to distribute under one or more trademark(s) which are controlled...

The Open Group Test Suite License Preamble The intent of this document is to state the conditions under which a Package may be copied, such that the Copyright Holder maintains some semblance of artistic control over the development of the package, while giving the users of the package the right to use and distribute the Package in a more-or-less customary fashion, plus the right to make reasonable modifications. Testing is essential for proper development and maintenance of standards-based products. For buyers: adequate conformance testing leads to reduced integration costs and protection of investments in applications, software and people. For software developers: conformance testing of platforms and ...

Computer Associates Trusted Open Source LicenseVersion 1.1 PLEASE READ THIS DOCUMENT CAREFULLY AND IN ITS ENTIRETY. THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS COMPUTER ASSOCIATES TRUSTED OPEN SOURCE LICENSE ("LICENSE"). ANY USE, REPRODUCTION, MODIFICATION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES THE RECIPIENT'S ACCEPTANCE OF THIS LICENSE. License Background Computer Associates International, Inc. (CA) believes in open source. We believe that the open source development approach can take appropriate software programs to unprecedented levels of quality, growth, and innovation. To demonstrate our continuing commitment to open source, we are releasing the Program (as defined below) under this License. T...

Copyright (C) 2007, 2008, 2009, 2010 Karl Berry. Copyright (C) 1988, 1994, 2007 Stephen Gilmore. Copyright (C) 1994, 1995, 1996 Torsten Martinsen. Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions.

GNU LIBRARY GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1991 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. [This is the first released version of the library GPL. It is numbered 2 because it goes with version 2 of the ordinary GPL.] Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public Licenses are intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. This license, the Libra...

People : Open Source Enthusiasts

A collection of open source and copyleft license writers.

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