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[Update 2015-01-29]: added some details of the scenario in question.
Just to make sure:
Do the licensen conditions allow to distribute and deploy the crossbar (crossbar.io, wamp, ...) stack in a commercial application?
Given that
We have a commercial application that is web based and consists of several server modules.
crossbar.io could be used to communicate between server processes and web clients.
We do not plan to open source our code
We will not modify crossbar.io
But we would like to deploy crossbar.io along with our product and install it with our setup tool.
Of course we would give credits and link to a local copy of the license file, for example in the about box.
Yes, I have looked at AGPL 3.0 but I have to admit that I am not sure if the answer to my question is plain 'yes' or 'no'.
I am also aware that mongodb uses it. From the mongodb licensing:
To make the above practical, we promise that your client application which uses the database is a separate work. To facilitate this, the mongodb.org supported drivers (the part you link with your application) are released under Apache license, which is copyleft free.
Note: if you would like a signed letter asserting the above promise please contact MongoDB, Inc.
If I understand correctly, in order to use crossbar.io library in our scenario, it is importtant that our proprietary server code is considered 'separate work'.
Is it?
Crossbar.io is licensed under the AGPL 3.0, the same license that e.g. MongoDB uses. The requirements of the AGPL 3.0 are listed in the license text.
Crossbar.io is also available under a commercial license as part of Crossbar.io Enterprise Subscription offered by Tavendo.
Note that connecting a WAMP client to Crossbar.io does not affect, impose requirements on or restrict the license of the client.
Disclaimer: I am original author of Crossbar.io and work for Tavendo.
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We will develop one commercial software for one company, and this software will be sold to customers of the company. This software contains font-end JS/HTML based codes and back-end C++ codes. We want to use ExtJS4.2 to develop font-end module.
We will not modify ExtJS code itself and just use it for the library, but I don't know if extending ExtJS type/class will be treated as "modifying ExtJS".
If we do not want to make back-end codes open source, which license do we need?
If we have to use Commercial License, Could we first use GPLv3 to try the ExtJS for learning and training privately in company, and use Commercial license when we decide to release software and begin to charge?
If we have to use Commercial License, which kind of Commercial License do we need to buy? We have one team containing several people to develop font-end module.
"Could we first use GPLv3 to try the ExtJS for learning and training privately in company, and use Commercial license when we decide to release software and begin to charge?"
Not according to Sencha's own commercial license. See this section of http://www.sencha.com/legal/sencha-sdk-software-license-agreement
"The Open Source version of the Software (“GPL Version”) is licensed under the terms of the GNU General Public License versions 3.0 (“GPL”) and not under this Agreement. If You, or another third party, has, at any time, developed all (or any portions of) the Application(s) using the GPL Version, You may not combine such development work with the Software and must license such Application(s) (or any portions derived there from) under the terms of the GNU General Public License version 3, a copy of which is located at http://www.gnu.org/copyleft/gpl.html."
I think all your questions are answered here.
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I am looking at different types of linux to run a small web server on, however I have a question as I am a bit confused about how the GPL works. If I have PHP scripts that I created myself, etc...running on the linux server, do those automatically become part of the GPL, or are those still mine to do with as I please? How about if I need to make a copy of the system, as is, by making a disk image, to install it on another computer of mine? Does that mean that all my work would become part of the GPL?
First of all it is very likely that your Linux system will run Apache, which is not licensed under terms of GPL, but Apache license. Apache itself does not run PHP scripts. In fact lots of functionality is provided by third-party modules and this applies to PHP too, which is handled by mod_php. Those modules are allowed to be distributed under their own licenses. And PHP utilizes this being distributed under terms of PHP license. PHP license is not permissive (or not copyleft), which means that you may distribute your scripts under any license you wish, with very little restrictions like including in your product a statement:
This product includes PHP software, freely available from <http://www.php.net/software/>
So basically no, your software will not become a part of GPL in any way.
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I'm interested in Mule ESB but I dont understand the licence, could someone explan me the CPAL licence in simple words?
We have a commercial porduct (JavaEE web application) that neads to be integrated with solutions that are hosting in the cliens environment. For example a clienat has a SAP instalation or any other source of data and want to integrate it with our java web application. We woud like to Mule to achive this functionality, does the CPAL licence allow this?
Our application and Mule could be hosting on our internal machinery or at the clients, both ways are possible.
First: I do not know anything about law.
That said, the CPAL license is based on Mozilla Public License, which is less strict than GPL and you can mix license rather freely as long as the code stays open.
CPAL introduces a concept, that if you run your application with CPAL code in it (Mule for instance), as a "Cloud" service, then you will have to give out the code as well. Simply put, if you alter the Mule source code and host it as a cloud service, you will have to give out your modifications.
I really recommend you to talk to a lawyer in your area (which knows the local laws and immaterial laws etc). However, I do know about a few companies that "bundles" Mule CE with commercial products without concern for license issues in a way very similar to your situation.
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I might need to use iTextSharp for a project I'm working on. I'd prefer to use the latest version so I'm trying to understand what the full implications of the GNU Affero General Public License is. I've read though the FSF documents but still have questions. I'm not going to modify it in any way, just call it from a component (windows service) that I've written. This component references other modules from the product I work on.
Currently the component is deployed on a server which runs website instances of the product for our clients. The component does work for all of the sites. We don't plan on distributing the product to clients yet, but it is on our roadmap for the future.
Would the component come under the GNU Affero General Public License when I use iTextSharp and therefore need to be made available for download? Would the other modules from the product referenced by my component come under the license as well?
Basically for the situation I've outlined above what would I need to do to keep within the licence agreement?
Thanks
K
i was also looking into using iTextSharp in a web application.
However the following paragraph from http://itextpdf.com/terms-of-use/ clarified the licensing implications:
Buying such a license is mandatory as soon as you develop commercial activities involving the iText software without disclosing the source code of your own applications. These activities include: offering paid services to customers as an ASP, serving PDFs on the fly in a web application, shipping iText with a closed source product.
Regards.
iTextSharp uses the LGPL license agreement and not the Affero model, http://www.java2s.com/Open-Source/CSharp/PDF/iTextSharp/CatalogiTextSharp.htm , License: GNU Library or Lesser General Public License (LGPL) says it right there.
iText is different from iTextSharp and both have separate licenses
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What is the difference between the Affero General Public License and the GNU General Public License (GPL)?
Assume the following:
You are developing a server side application in GPL. Now this application serves HTML and not an executable which is directly executed on your machine. That means that another guy could take the GPL code, adapt it and does not necessarily need to publish it. Ie. he can create the identical service using your software without violating the GPL. (Although THEN he cannot publish the software itself i.e. selling)
Not so with the AGPL.
This hole in the GPL is often called "Application Service Provider" hole.
Search for "Why AGPL" or "AGPL vs. GPL" or just read this for some real projects who have problems with GPL. The MongoDB tries another interesing thing. They want that people do not fork the core DB (thatwhy AGPL) but the driver which has to be linked with the main program is apache 2.0 licensed so that the mongoDB could be used within commercial application.
Public web application that uses the AGPL are listed at wikipedia.
See http://www.gnu.org/licenses/licenses.html#AGPL
The GNU Affero General Public License is based on the GNU GPL, but has an additional term to allow users who interact with the licensed software over a network to receive the source for that program. We recommend that people consider using the GNU AGPL for any software which will commonly be run over a network.