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1. Top results related to gnu general public license v3.0

   • GNU GENERAL PUBLIC LICENSE software as part of commercial product

     Top Answer

     Answered Nov 23, 2012 · 7 votes

     Using GPL in a commercial product is a very complex matter. In the times of GPLv2 there was a grey zone that's been very thoroughly cleaned up in GPLv3. To provide detailed information, you should let us know what module it is you're using and what version of GPL it falls under.

     It all comes down to "is your code a derived work of the GPL module". To give a stupid example. If the GPL module is a bubblesort and your application uses the API of the module, it's a derived work, so everything falls under GPL. If you make webservice around the module, the webservice is GPL but anything using the webservice is not. In an even more grey area, if you have old code using another sort algorithm and you make a "wrapping" layer to change translate the API from the old sort to the new sort, then only the wrapping layer is GPL as the original application is not a derived work (it was available before you used the GPL module and not written with the GPL module in mind). Note that this is all highly debatable, but things like non-GPL binary linux kernel module exist based on this interpretation of GPLv2.

     Like Neil already said: Falling under GPL doesn't mean you have to publish your code. Only when a person having a license for your software asks for it, you should provide it. A random person cannot just ask for the code unless he/she actually bought the application. Of course, only one person has to buy it and then he/she does whatever he/she wants with the code (like publish it for example).

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     1/5

   • GNU Public License version 2 with Classpath Exception?

     Top Answer

     Answered Jan 26, 2010 · 5 votes

     Googling your question gets the text of the licence:

     http://openjdk.java.net/legal/gplv2+ce.html

     Which states:

     As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

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     2/5

   • License Cost Minimization Algorithm

     Top Answer

     Answered Feb 07, 2015 · 1 votes

     Part of solving a problem like this is coming up with a proof that your proposed solution actually works. Based on what you say in the question, here is an attempt at this:

     Suppose the best solution does not take the licenses in decreasing order of cost. Take two licenses Xi, Xj in the supposed solution with Xi < Xj and i < j. Now swap them. The costs of other licenses are unchanged. The cost from these two licenses changes from Xi * r^i + Xj * r^j to Xi * r^j + Xj * r^i, which is a decrease as long as r>1. So Any solution not in decreasing order of cost can be improved, and the best solution is indeed to order the licenses in decreasing order of cost.

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     3/5

   • license and protect php script

     Top Answer

     Answered Jul 21, 2009 · 12 votes

     PHP code cannot be encrypted because at some point you have to eval() the string that will be producing the output.So there isn't a way to actually keep people from stealing your code if you let it get off your servers.

     For the most part, trying to protect the code is useless. People make money off of code by either A) Working for someone, B) Providing updates/support to only valid paying customers, or C) Somehow make the data the software uses go through their own servers to get to the client.

     Any other attempt to protect the code requires legal counsel and action.

     Other Answers

     Answered Jul 21, 2009 · 7 votes

     By itself, a system like PHPLicengine is useless. Your PHP script will still be a plain text PHP script, so someone can just strip the license code out (it'll take 1/10th as long as it took you to integrate), and do whatever they like with it.

     PHP script encoders (like IonCube, Zend Encoder) have the ability to pre-compile PHP scripts into bytecode. They require the web server to have a PHP extension to decode and run the compiled scripts.

     They basically do the same thing as obfuscators in Java / .NET - create an obfuscated binary version that still runs, but is more difficult to decompile or modify.

     There are problems with this approach - not all web hosts have the appropriate PHP extension installed, and each script encoder needs it's own. Even those that do will typically have only one (IonCube and Zend are the most common). Typically, your customers won't be able to install the appropriate PHP extension, since they don't own or control their web server, so only having an obfuscated version available might prevent some customers from using (and therefore buying) your software.

     Judging from the FAQs on the PHPLicengine website, the licensing portions of their license system are encoding using IonCube anyway, so that pretty much forces you into using IonCube.

     Other Answers

     Answered Jul 21, 2009 · 3 votes

     You can compile php code. It is not a simple process though. Take a look at Bcompiler or byte compiler on the php.net site.

     http://us.php.net/manual/en/intro.bcompiler.php

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     4/5

   • License plate recognition using OpenCV

     Top Answer

     Answered Dec 28, 2009 · 3 votes

     dunno what implementations are available in opencv, but a couple other libraries are:

     • JavaANPR
     • DTK ANPR

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     5/5

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2. www.gnu.org › licenses › gpl-3The GNU General Public License v3.0 - GNU Project - Free ...

   www.gnu.org › licenses › gpl-3

   • Cached

   Jun 29, 2007 · The GPLv3 is a free, copyleft license for software and other works that guarantees your freedom to share and change them. It also protects you from patents and devices that deny you access to modified versions.

3. en.wikipedia.org › wiki › GNU_General_Public_LicenseGNU General Public License - Wikipedia

   en.wikipedia.org › wiki › GNU_General_Public_License

   • Cached

   It follows the successful LGPLv2.1 license, and was released by Free Software Foundation as a counterpart to its GNU General Public License version 3. The goal of the GNU Lesser General Public Licenses is to provide software that can be used by both proprietary and free software.

4. stackoverflow.com › questions › 41460What are the differences between GPL v2 and GPL v3 licenses?

   stackoverflow.com › questions › 41460

   • Cached

   A question and answers about the differences between the GPL v2 and GPL v3 open source licenses, with references to legal terms and further descriptions. The answers cover topics such as internationalization, patents, Tivo-ization, DRM, compatibility, and termination.

   • The page linked to in another answer is a good source, but a lot to read. Here is a short list of some the major differences: internationalization...
   • This link also highlight the differences between GPLv2 and GPLv3. Content:
   • This page highlights the differences, but it's still quite a lot to read through.
   • In (not entirely) cynical terms, the reason for the v3 license was Microsoft's patent deal with Novell. In reality, you should always consult a la...

5. snyk.io › learn › what-is-gpl-license-gplv3-explainedGNU General Public License | GPLv3 explained | Snyk

   snyk.io › learn › what-is-gpl-license-gplv3-explained

   • Cached

   GPLv3 is a free software license that allows users to modify and redistribute software without restrictions. Learn about its copyleft protections, compatibility regulations, patent clauses, and how to use it in commercial software.

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7. fossa.com › blog › open-source-software-licenses-101Open Source Software Licenses 101: GPL v3 - FOSSA

   fossa.com › blog › open-source-software-licenses-101

   • Cached

   Learn the basics, differences, and use cases of the GNU General Public License Version 3.0, a strong copyleft license for open source software. Compare GPL v3 with GPL v2 and Apache License 2.0, and understand the patent grant and compatibility issues.

8. opensource.org › licenses-old › gpl-license-htmlGNU General Public Licenses – Open Source Initiative

   opensource.org › licenses-old › gpl-license-html

   Feb 5, 2008 · GNU General Public License, version 3 (SPDX short identifier: GPL-3.0) If you have licensed software you’ve written under GPL version 2, and you are the original licensor of that software, you may wish to relicense your software under GPL version 3.

9. People also ask

   What is a GNU Lesser General Public License?

   • It follows the successful LGPLv2.1 license, and was released by Free Software Foundation as a counterpart to its GNU General Public License version 3. The goal of the GNU Lesser General Public Licenses is to provide software that can be used by both proprietary and free software.

   GNU General Public License - Wikipedia

   en.wikipedia.org/wiki/GNU_General_Public_License

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   What is a general public license?

   • Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them 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, and that you know you can do these things.

   The GNU General Public License v3.0 - GNU Project - Free Software

   www.gnu.org/licenses/gpl-3.0.en.html

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   Is GNU GPL v2 a copyleft license?

   • The previous post in our series on popular open source software (OSS) licenses went through the ins-and-outs of the GNU GPL v2 license, a copyleft license originally published by the GNU Project. However, version 2.0 is not the most recent — or necessarily the most popular — version of the GNU GPL (General Public License).

   Open Source Software Licenses 101: GPL v3 - FOSSA - Dependency Hea…

   fossa.com/blog/open-source-software-licenses-101-gpl-v3/

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   Can I copy the GNU general public license?

   • Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. The GNU General Public License is a free, copyleft license for software and other kinds of works. The licenses for most software and other practical works are designed to take away your freedom to share and change the works.

   The GNU General Public License v3.0 - GNU Project - Free Software

   www.gnu.org/licenses/gpl-3.0.en.html

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