Linden Lab Official:FLOSS exception

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This article is obsolete, but kept as a historical record. Do not rely on this information in any way. However, it may be used in the future, so please do not delete or modify.



Linden Research, Inc. ("Linden Lab") Viewer FLOSS License Exception v0.5

The Linden Lab Exception for Free/Libre and Open Source Software-only Applications Using Linden Lab Viewer Software (the "FLOSS Exception").

Exception Intent

Linden Lab is releasing the source code for certain software that enables users to view or otherwise access the Second Life virtual world environment (the "Viewer Software"), under version 2 of the GNU General Public License (the "GPL"). The creation or distribution of works based on the Program (as defined under the GPL) of the Viewer Software may require the use of certain Free/Libre and Open Source Software ("FLOSS") works that are subject to license agreements not compatible with re-licensing under the GPL. Because we want to allow the Viewer Software to be distributed with these FLOSS works, this FLOSS Exception following exception applies subject to the terms and conditions below.

Legal Terms and Conditions

As a special exception to the terms and conditions of version 2.0 of the GPL.

You are free to distribute a work based on the Program that is formed entirely from the Viewer Software (and any modifications thereof) and one or more works that are independent and separate works not derived from the Viewer Software, and are licensed under one or more of the licenses listed below in section 1 (each, a "FLOSS Work") , as long as:

  1. You obey the GPL in all respects for the Viewer Software and any work based on the Program, except for the FLOSS Works, for which you must comply with B below,
  2. all FLOSS Works,
    1. are distributed subject to one of the FLOSS licenses listed below, and
    2. the object code or executable form of the FLOSS Works are accompanied by the complete corresponding machine-readable source code for those FLOSS Works on the same medium and under the same FLOSS license as the corresponding object code or executable forms thereof, and
  3. any works that are aggregated with the Viewer Software or a work based on the Program on a volume of a storage or distribution medium in accordance with the GPL, and are not licensed under the FLOSS licenses listed below, are independent and separate works in themselves which are not derivatives of either the Viewer Software, a work based on the Program or a FLOSS Work.

If the above conditions are not met, then the Viewer Software may only be copied, modified, distributed or used under the terms and conditions of the GPL or another valid licensing option from Linden Lab.

1. FLOSS License List

License name Version(s)/Copyright Date

Academic Free License 2.0

Apache Software License 1.0/1.1/2.0

Apple Public Source License 2.0

Artistic license From Perl 5.8.0

BSD license "July 22 1999"

Boost Software License 1.0

Common Development and Distribution License (CDDL) 1.0

Common Public License 1.0

FreeType Project License 2006

GLOD Open-Source License 1.0

GNU Library or "Lesser" General Public License (LGPL) 2.0/2.1

Jabber Open Source License 1.0

MIT License (As listed in file MIT-License.txt) -

Mozilla Public License (MPL) 1.0/1.1

Open Software License 2.0

OpenSSL license (with original SSLeay license) "2003" ("1998")

PHP License 3.0

Python license (CNRI Python License) -

Python Software Foundation License 2.1.1

Sleepycat License "1999"

W3C License "2001"

X11 License "2001"

Zlib/libpng License -

Zope Public License 2.0

Due to the many variants of some of the above licenses, we require that any variant of the above licenses be identical in substance to the form approved by the Open Source Initiative and follow the 2003 version of the Free Software Foundation's Free Software Definition or version 1.9 of the Open Source Definition by the Open Source Initiative.

2. Definitions

Terms used, but not defined, herein shall have the meaning provided in the GPL.

3. Applicability

This FLOSS Exception applies to all Viewer Software files that contain a notice placed by Linden Lab saying that the Viewer Software may be distributed under the terms of this FLOSS Exception. If you create or distribute a work which is a work based on the Program for the Viewer Software and any other work licensed under the GPL, then this FLOSS Exception is not available for that work; thus, you must remove the FLOSS Exception notice from that work and comply with the GPL in all respects, including by retaining all GPL notices. You may choose to redistribute a copy of the Viewer Software exclusively under the terms of the GPL by removing the FLOSS Exception notice from that copy of the Viewer Software, provided that the copy has never been modified by you or any third party.

The Second Life Viewer is available under multiple licenses, including the GNU General Public License v2.0.