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GPLv3 - The changes between GPLv2 and draft 2 of GPLv3

For more information about GPLv3 and how to participate, see our GPLv3 project page.

Below shows the combined text of version 2 of the GNU GPL and draft 2 of GNU GPL version 3. Text that was in version 2, but which is not in the second draft, has a line through it. Text which is new in draft two is in bold. (Ex: old text new text)


Discussion Draft 2 of Version 2, June 1991 3, 27 July 2006


Copyright (C) 1989, 1991 2006 Free Software Foundation, Inc. 59 Temple Place, Suite 330, 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.


The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. This We, the Free Software Foundation, use the GNU General Public License applies to for most of the Free Software Foundation's software and our software; it applies also to any other program whose authors commit to using it. (Some other Free Software Foundation software is covered by the GNU Library General Public License instead.) You can apply it to your programs, too.

When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for this service if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs; programs, and that you know you can do these things.

To protect your rights, we need to make restrictions requirements that forbid anyone to deny you these rights or to ask you to surrender the rights. These restrictions translate to Therefore, you have certain responsibilities for you if you distribute copies of the software, or if you modify it.

For example, if you distribute copies of such a program, whether gratis or for a fee, you must give the recipients all the rights that you have. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights.


Developers that use the GNU GPL protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this license License which gives you legal permission to copy, distribute and/or modify the software.

Also, for each author's protection

For the developers' and ours, we want to make certain that everyone understands authors' protection, the GPL clearly explains that there is no warranty for this free software. If the software is modified by someone else For both users' and passed on, we want its recipients to know that what they have is not authors' sake, the original, GPL requires that modified versions be marked as changed, so that any their problems introduced by others will not reflect on be associated erroneously with the original authors' reputations. version.

Some computers are designed to deny users access to install or run modified versions of the software inside them. This is fundamentally incompatible with the purpose of the GPL, which is to protect users' freedom to change the software. Therefore, the GPL ensures that the software it covers will not be restricted in this way.

Finally, any free every program is threatened constantly by software patents. We States should not allow patents to restrict development and use of software on general-purpose computers, but in places where they do, we wish to avoid the special danger that redistributors of a free program will individually obtain patent licenses, in effect making the program proprietary. To prevent this, we have made it clear the GPL assures that any patent must patents cannot be licensed for everyone's free use or not licensed at all.

The precise terms and conditions for copying, distribution and modification follow.

GNU GENERAL PUBLIC LICENSE used to render the program non-free.


0. This License applies Definitions.

In this License, each licensee is addressed as "you," while "the Program" refers to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of authorship licensed under this General Public License. The "Program", below, refers to any such program A "modified" work includes, without limitation, versions in which material has been translated or work, and a "work based on the Program" added. A work "based on" another work means any modified version, formation of which requires permission under applicable copyright law. A "covered work" means either the unmodified Program or any derivative a work based on the Program.

To "propagate" a work means doing anything with it that requires permission under applicable copyright law: law, except executing it on a computer, or making modifications that is you do not share. Propagation includes copying, distribution (with or without modification), making available to say, the public, and in some countries other activities as well. To "convey" a work containing means any kind of propagation that enables other parties to make or receive copies, excluding sublicensing.

A party's "essential patent claims" in a work are all patent claims that the Program party can give permission to practice, whether already acquired or to be acquired, that would be infringed by making, using, or selling the work.

1. Source Code.

The "source code" for a portion work means the preferred form of it, either verbatim or with the work for making modifications and/or translated into another language. (Hereinafter, translation to it. "Object code" means any non-source version of a work.

The "System Libraries" of an executable work include every subunit such that (a) the identical subunit is normally included without limitation as an adjunct in the term "modification".) Each licensee is addressed as "you".

Activities other than copying, distribution of either a major essential component (kernel, window system, and modification are not covered by this License; they are outside its scope. The act so on) of running the Program is not restricted, specific operating system (if any) on which the object code runs, or a compiler used to produce the object code, or an object code interpreter used to run it, and (b) the output subunit (aside from the Program is covered possible incidental extensions) serves only if its contents constitute a work based on the Program (independent to enable use of having been made by running the Program). Whether work with that system component or compiler or interpreter, or to implement a widely used or standard interface for which an implementation is true depends on what the Program does.

1. You may copy and distribute verbatim copies of available to the Program's public in source code as you receive it, form.

The "Corresponding Source" for a work in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact object code form means all the notices that refer source code needed to this License generate, install, and (for an executable work) run the object code and to modify the absence of any warranty; work, except its System Libraries, and give any other recipients except general-purpose tools or generally available free programs which are used unmodified in performing those activities but which are not part of the Program a copy of this License along work. For example, Corresponding Source includes scripts used to control those activities, interface definition files associated with the Program.

You may charge a fee for the physical act of transferring a copy, program source files, and you may at your option offer warranty protection in exchange the source code for a fee.

2. You may modify your copy or copies of shared libraries and dynamically linked subprograms that the Program work is specifically designed to require, such as by complex data communication or any portion control flow between those subprograms and other parts of it, thus forming a work based on the Program, and copy and distribute such modifications work.

The Corresponding Source also includes any encryption or work under authorization keys necessary to install and/or execute modified versions from source code in the terms recommended or principal context of Section 1 above, provided use, such that you also meet they can implement all the same functionality in the same range of these conditions:

a) You circumstances. (For instance, if the work is a DVD player and can play certain DVDs, it must cause be possible for modified versions to play those DVDs. If the work communicates with an online service, it must be possible for modified files versions to carry prominent notices stating that you changed communicate with the files and same online service in the date of any change.

b) You must cause any work that you distribute or publish, same way such that the service cannot distinguish.) A key need not be included in whole or in part contains or is derived from cases where use of the Program or any part thereof, to be licensed as a whole at no charge to all third parties under work normally implies the terms of this License.

c) If user already has the modified program normally reads commands interactively when run, you must cause key and can read and copy it, when started running for such interactive use as in privacy applications where users generate their own keys. However, the most ordinary way, to print or display an announcement including an appropriate copyright notice and a notice that there is no warranty (or else, saying fact that you provide a warranty) and that users may redistribute the program under these conditions, and telling key is generated based on the user how to view a copy object code of this License. (Exception: if the Program itself work or is interactive but present in hardware that limits its use does not normally print such an announcement, your work based on alter the Program is not required to print an announcement.)

These requirements apply requirement to include it in the modified work Corresponding Source.

The Corresponding Source may include portions which do not formally state this License as their license, but qualify under section 7 for inclusion in a whole. If identifiable sections of that work are under this License.

The Corresponding Source need not derived include anything that users can regenerate automatically from other parts of the Program, and can be reasonably considered independent and separate works in themselves, then Corresponding Source.

2. Basic Permissions.

All rights granted under this License, and its terms, do not apply to those sections when you distribute them as separate works. But when you distribute License are granted for the same sections as part term of a whole which is a work based copyright on the Program, and are irrevocable provided the distribution of the whole must be on stated conditions are met. This License explicitly affirms your unlimited permission to run the terms of unmodified Program. The output from running it is covered by this License, whose permissions for other licensees extend to License only if the entire whole, and thus output, given its content, constitutes a covered work. This License acknowledges your rights of "fair use" or other equivalent, as provided by copyright law.

This License permits you to each make and every part regardless run privately modified versions of who wrote it.

Thus, it is not the intent of this section to claim rights Program, or contest have others make and run them on your rights to work written entirely by you; rather, the intent is to exercise the right behalf. However, this permission terminates, as to control the distribution all such versions, if you bring suit against anyone for patent infringement of derivative or collective works based on the Program.

In addition, mere aggregation any of another your essential patent claims in any such version, for making, using, selling or otherwise conveying a work not based on the Program in compliance with this License.

Propagation of covered works other than conveying is permitted without limitation. Sublicensing is not allowed; section 10 makes it unnecessary. Conveying is permitted under the Program (or with a conditions stated below.

3. No Denying Users' Rights through Technical Measures.

Regardless of any other provision of this License, no permission is given for modes of conveying that deny users that run covered works the full exercise of the legal rights granted by this License.

No covered work based on constitutes part of an effective technological "protection" measure under section 1201 of Title 17 of the Program) on United States Code. When you convey a volume covered work, you waive any legal power to forbid circumvention of a storage technical measures that include use of the covered work, and you disclaim any intention to limit operation or distribution medium does not bring modification of the other work under as a means of enforcing the scope legal rights of this License.

3. third parties against the work's users.

4.[1] Verbatim Copying.

You may copy and distribute convey verbatim copies of the Program (or a work based on Program's source code as you receive it, under Section 2) in object code or executable form under the terms of Sections 1 and 2 above any medium, provided that you also do one of the following:

a) Accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Sections 1 conspicuously and 2 above appropriately publish on a medium customarily used for software interchange; or,

b) Accompany it each copy an appropriate copyright notice; keep intact all license notices and notices of the absence of any warranty; and give all recipients, along with the Program, a written offer, valid for at least three years, to give copy of this License and the central list (if any) required by section 7. The recipients of these copies will possess all the rights granted by this License (with any third party, for a added terms under section 7).

You may charge any price or no more than your cost of physically performing source distribution, price for each copy that you convey, and you may offer support or warranty protection for a complete machine-readable fee.

5.[2] Conveying Modified Source Versions.

You may copy of and convey a work based on the corresponding source code, Program, or the modifications to be distributed produce it from the Program, in the form of source code under the terms of Sections 1 section 4 above, provided that you also meet all of these conditions:

a) The modified work must carry prominent notices stating that you changed the work and 2 above on a medium customarily used for software interchange; or,

c) Accompany it with the information you received date of any change.

b) You must license the entire work, as a whole, under this License to the offer anyone who comes into possession of a copy. This License must apply, unmodified except as permitted by section 7 below, to distribute corresponding source code. (This alternative is allowed only for noncommercial distribution the whole of the work, and only all its parts, regardless of how they are packaged. This License gives no permission to license the work in any other way, but it does not invalidate such permission if you have separately received it.

c) If the program in object code or executable form with such an offer, in modified work has interactive user interfaces, each must include a convenient feature that displays an appropriate copyright notice, and tells the user that there is no warranty for the program (or that you provide a warranty), that users may convey the modified work under this License, and how to view a copy of this License together with the central list (if any) of other terms in accord with Subsection b above.)

The source code section 7. Specifically, if the interface presents a list of user commands or options, such as a menu, a command to display this information must be prominent in the list; otherwise, the modified work must display this information at startup. However, if the Program has interactive interfaces that do not comply with this subsection, your modified work need not make them comply.

To the extent that identifiable sections of the modified work, added by you, are not derived from the Program, and can be reasonably considered independent and separate works in themselves, then this License, and its terms, do not apply to those sections when you convey them as separate works, not specifically for use in combination with the Program.

A compilation of a covered work means with other separate and independent works, which are not by their nature extensions of the preferred covered work, in or on a volume of a storage or distribution medium, is called an "aggregate" if the compilation and its resulting copyright are not used to limit the access or legal rights of the compilation's users beyond what the individual works permit. Inclusion of a covered work in an aggregate does not cause this License to apply to the other parts of the aggregate.

6.[3] Conveying Non-Source Forms.

You may copy and convey a covered work in object code form under the terms of sections 4 and 5, provided that you also convey the machine-readable Corresponding Source under the terms of this License, in one of these ways:

a) Convey the object code in a physical product (including a physical distribution medium), accompanied by the Corresponding Source fixed on a durable physical medium customarily used for software interchange.

b) Convey the object code in a physical product (including a physical distribution medium), accompanied by a written offer, valid for at least three years and valid for as long as you offer spare parts or customer support for that product model, to give any third party a copy of the Corresponding Source for all the software in the product that is covered by this License, on a durable physical medium customarily used for software interchange, for a price no more than your reasonable cost of physically performing this conveying of source.

[b1) Convey the object code in a physical product (including a physical distribution medium), accompanied by a written offer, valid for at least three years and valid for as long as you offer spare parts or customer support for that product model, to provide access to copy the Corresponding Source from a network server at no charge.]

c) Convey individual copies of the object code with a copy of the written offer to provide the Corresponding Source. This alternative is allowed only occasionally and noncommercially, and only if you received the object code with such an offer, in accord with subsection 6b or 6b1.

d) Convey the object code by offering access from a designated place, and offer equivalent access to the Corresponding Source in the same way through the same place at no extra charge. You need not require recipients to copy the Corresponding Source along with the object code.

[If the place to copy the object code is a network server, the Corresponding Source may be on a different server that supports equivalent copying facilities, provided you have explicitly arranged with the operator of that server to keep the Corresponding Source available for as long as needed to satisfy these requirements, and provided you maintain clear directions next to the object code saying where to find the Corresponding Source.]

e) Convey the object code using peer-to-peer transmission provided you know that, and inform other peers where, the object code and Corresponding Source of the work are being offered to the general public at no charge under subsection 6d.

The Corresponding Source conveyed in accord with this section must be in a format that is publicly documented, with an implementation available to the public in source code form, and must require no special password or key for unpacking, reading or copying.

A separable portion of the object code, whose source code is excluded from the Corresponding Source as a System Library, need not be included in conveying the object code work.

7. Additional Terms.

You may have received the Program, or parts of it, under terms that supplement the terms of this License. These additional terms may include additional permissions, as provided in subsection 7a, and additional requirements, as provided in subsection 7b. When you convey copies of a covered work, unless the work also permits use under a previous version of this License, it must list, in one central place in the source code, the complete set of additional terms governing all or part of the work.

a. Additional Permissions.

Additional permissions make exceptions from one or more of the requirements of this License. A license document containing a clause that permits relicensing or conveying under this License shall be treated as a list of additional permissions, provided that the license document makes clear that no requirement in it survives such relicensing or conveying.

Any additional permissions that are applicable to the entire Program are treated as though they were included in this License, as exceptions to its conditions, to the extent that they are valid under applicable law. If additional permissions apply only to part of the Program, that part may be used separately under those permissions, but the entire Program remains governed by this License without regard to the additional terms.

b. Additional Requirements.

Additional requirements are terms that further constrain use, modification or propagation of covered works. This License affects only the procedure for enforcing additional requirements, and does not assert that they can be successfully enforced by the copyright holder. Only these kinds of additional requirements are allowed by this License:

0) terms that require preservation of specified reasonable legal notices or author attributions; or

1) terms that require that the origin of the material they cover not be misrepresented, or that modified versions of that material be marked in specific reasonable ways as different from the original version; or

2) warranty or liability disclaimers that differ from the disclaimers in this License; or

3) terms that prohibit or limit the use for publicity purposes of specified names of licensors or authors, or that require that certain specified trade names, trademarks, or service marks not be used for publicity purposes without express permission, other than in ways that are fair use under applicable trademark law; or

4) terms that require, if a modified version of the material they cover is a work intended to interact with users through a computer network, that those users be able to obtain copies of the Corresponding Source of the work through the same network session; or

5) terms that wholly or partially terminate, or allow termination of, permission for use of the material they cover, for a user who files a software patent lawsuit (that is, a lawsuit alleging that some software infringes a patent) not filed in retaliation or defense against the earlier filing of another software patent lawsuit, or in which the allegedly infringing software includes some of the covered material, possibly in combination with other software; or

6) terms that are precisely equivalent in type and extent to a requirement expressly stated in this License, or that deny permission for activities that are clearly not permitted, expressly or otherwise, by this License.

All other additional requirements, including attorney's fees provisions, choice of law, forum, and venue clauses, arbitration clauses, mandatory contractual acceptance clauses, requirements regarding changes to the name of the work, and terms that require that conveyed copies be governed by a license other than this License, are prohibited.

c. Terms Added or Removed by You.

When you convey a copy of the work for making modifications to it. For an executable a covered work, complete source code means all the source code for all modules it contains, plus you may at your option remove any associated interface definition files, plus the scripts used to control compilation and installation additional permissions from that copy, or from any part of it. Some additional permissions require their own removal in certain cases when you modify the executable. However, work.

Additional requirements are allowed only as a special exception, stated in subsection 7b. If the source code distributed need not include anything Program as you received it purports to impose any other additional requirement, you may remove that is normally distributed (in either source requirement.

You may place additional permissions, or binary form) with the major components (compiler, kernel, and so on) of the operating system additional requirements as allowed by subsection 7b, on material, added by you to a covered work, for which the executable runs, unless that component itself accompanies the executable.

If distribution of executable you have or object code is made can give appropriate copyright permission. Adding requirements not allowed by offering access subsection 7b is a violation of this License that may lead to termination of your rights under section 8.

If you add terms to copy from a designated covered work in accordance with this section, you must place, then offering equivalent access to copy in the relevant source code from the same place counts as distribution files, a statement of the source code, even though third parties are not compelled additional terms that apply to copy the source along with those files, or a notice indicating where to find the object code.

4. applicable terms.

8.[4] Termination.

You may not copy, modify, sublicense, propagate or distribute modify the Program except as expressly provided under this License. Any attempt otherwise to copy, modify, sublicense propagate or distribute modify the Program is void, and will automatically void. If you violate this License, any copyright holder may put you on notice by notifying you of the violation, by any reasonable means, provided 60 days have not elapsed since the last violation. Having put you on notice, the copyright holder may then terminate your rights under this License. license at any time. However, parties who have received copies, or rights, from you under this License will not have their licenses terminated so long as such parties as they remain in full compliance.


9.[5] Acceptance Not Required for Having Copies.

You are not required to accept this License, since you have License in order to receive or run a copy of the Program. Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not signed it. require acceptance. However, nothing else grants you permission to modify propagate or distribute modify the Program or its derivative any covered works. These actions are prohibited by law infringe copyright if you do not accept this License. Therefore, by modifying or distributing propagating the Program (or any work based on the Program), covered work), you indicate your acceptance of this License to do so, and all its terms and conditions for copying, distributing conditions.

10.[6] Automatic Licensing of Downstream Users.

Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License, including any additional terms introduced through section 7. You may not impose any further restrictions on the recipients' exercise of the rights thus granted or modifying affirmed, except in the Program limited ways permitted by section 7. Therefore, you may not impose a license fee, royalty, or works based other charge for exercise of rights granted under this License. You are not responsible for enforcing compliance by third parties to this License.

If propagation results from a transaction transferring control of an organization, each party to that transaction who receives a copy of the work also receives a license and a right to possession of the Corresponding Source of the work from the party's predecessor in interest.

11. Patents.

You receive the Program with a covenant from each author and conveyor of the Program, and of any material, conveyed under this License, on it.

6. Each time you redistribute which the Program is based, that the covenanting party will not assert (or cause others to assert) any work of the party's essential patent claims in the material that the party conveyed, against you, arising from your exercise of rights under this License. If you convey a covered work, you similarly covenant to all recipients, including recipients of works based on the Program), the recipient automatically receives the covered work, not to assert any of your essential patent claims in the covered work.

If you convey a covered work, knowingly relying on a non-sublicensable patent license from the original licensor that is not generally available to copy, distribute all, you must either (1) act to shield downstream users against the possible patent infringement claims from which your license protects you, or modify (2) ensure that anyone can copy the Program subject to these terms and conditions. You may not impose any further restrictions on Corresponding Source of the recipients' exercise covered work, free of charge and under the rights granted herein. You are not responsible for enforcing compliance by third parties to this License.

7. If, as a consequence terms of this License, through a court judgment publicly available network server or allegation of patent infringement other readily accessible means.

Nothing in this License shall be construed as excluding or for limiting any implied license or other reason (not limited defenses to infringement that may otherwise be available to you under applicable patent issues), law.

12.[7] No Surrender of Others' Freedom.

If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot distribute convey the Program, or other covered work, so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not distribute the Program at all. For example, if a patent license would not permit royalty-free redistribution of the Program by all those who receive copies directly or indirectly through you, then the only way you could satisfy both it and this License would be to refrain entirely from distribution of the Program.

If any portion of this section is held invalid or unenforceable under any particular circumstance, the balance of the section is intended to apply and the section as a whole is intended to apply in other circumstances.

It is not the purpose of this section to induce you to infringe any patents or other property right claims or to contest validity of any such claims; this section has the sole purpose of protecting the integrity of the free software distribution system, which is implemented by public license practices. Many people have made generous contributions to the wide range of software distributed through that system in reliance on consistent application of that system; convey it is up to the author/donor to decide at all. For example, if he you accept a patent license that prohibits royalty-free conveying by those who receive copies directly or she is willing to distribute software indirectly through any other system you, then the only way you could satisfy both it and a licensee cannot impose that choice.

This section is intended to make thoroughly clear what is believed to this License would be a consequence of to refrain entirely from conveying the rest of this License.

8. Program.

[13.[8] Geographical Limitations.

If the distribution conveying and/or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Program under this License may add an explicit geographical distribution limitation on conveying, excluding those countries, so that distribution conveying is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License.]

14.[9] Revised Versions of this License.


The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.

Each version is given a distinguishing version number. If the Program specifies that a certain numbered version number of this License which "or any later version" applies to it and "any later version", it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of this License, you may choose any version ever published by the Free Software Foundation.


[15.[10] Requesting Exceptions.

If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different, under other licenses, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally.





16.[11] Disclaimer of Warranty.

There is no warranty for the Program, to the extent permitted by applicable law. Except when otherwise stated in writing the copyright holders and/or other parties provide the Program "as is" without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. The entire risk as to the quality and performance of the Program is with you. Should the Program prove defective, you assume the cost of all necessary servicing, repair or correction.

17.[12] Limitation of Liability.

In no event unless required by applicable law or agreed to in writing will any copyright holder, or any other party who may modify and/or convey the Program as permitted above, be liable to you for damages, including any general, special, incidental or consequential damages arising out of the use or inability to use the Program (including but not limited to loss of data or data being rendered inaccurate or losses sustained by you or third parties or a failure of the Program to operate with any other programs), even if such holder or other party has been advised of the possibility of such damages.