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We are wondering if someone has experience with the way Qt license works. We want to develop a closed source, proprietary license application (with static linking to Qt libraries), which will be installed to several computers (> 100). We might consider purchasing a commercial license, but we are not sure whether the license fee is:
per developer
per workstation
per company
per installation
per team
anything else?
Anyone has experience in this area?
When I used it, eons ago, the license was "per developer".
This has changed now, as far as I can tell. Take a look at this:
QT commercial vs. non-commercial license for beginner and
https://stackoverflow.com/questions/2945612/qt-lgpl-licencing-for-a-free-application-with-closed-source
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I am the beginner in programming and from last year I started programming. And I done with C and learning the C++ and I also study the HTML. Now I want to try hand on Software programming which is better for me QT or Visual Studio for developing the commercial or non-commercial software.
Qt is an application framework, whereas Visual Studio is an Integrated Development Environment (IDE). They are not the same thing, so you can't compare them.
In addition, please note that questions that ask for comparisons and generate a lot of personal opinions do not find favour in this forum.
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I want to use QtWebKit, which uses QtCore and QtGui DLLs. Can I sell a library which uses them and redistribute them with my library's instalation? The library is not open source.
Qt is under the LGPL version 2.1, so, yes, you can sell a library and distribute the Qt library with it, provided that when you distribute your library, you "give prominent notice with each copy" that Qt is used and that Qt is covered by the LGPL.
This same rule applies to both applications and libraries that use Qt, as long as they are not derivative works, and if you do make any changes within Qt's code that those changes are published under the terms of the LGPL.
Licensing information for QTWebKit can be found at http://doc.qt.nokia.com/4.7-snapshot/qtwebkit.html#license-information.
Agree question s/b closed - this isn't the right place for legal advice.
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I want to start a cross-platform project. I had my researches and now I am almost certain Qt is the right deal. There is a big obstacle here though: licensing.
I want to sell my project and I also don't want to give out any source related to my work or pay for a license. I checked and noticed Qt offers both commercial and open source solutions. I have heard too many conflicting sayings on Qt licensing which confused me a lot. Some say that even if I use LGPL version of Qt, I still need to submit my code. Is this true?
Can someone give me a simple explanation on Qt licenses and tell me if I can sell my application without any kind of restrictions at all or not? Would anyone tell me any other equivalents to Qt for cross-platform development without any restrictions?
Just dynamically link to Qt. If you dynamically link to LGPL libraries, there's nothing to worry about.
If you statically link to them, you can just distribute your object files (not your source code), and you'll be fine.
The idea of the LGPL is that the end user has to be able to replace the LGPL library with a version they want. Dynamically linking to the LGPL library lets you do that, as does statically linking and distributing your object files. So long as you do this, you can sell your closed source program all you want.
Of course, there's more to the LGPL than just this, but that's the relevant part.
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Is Oracle Business Intelligence, v. 11.1.1.5.0 free to install? What are the system requirements for installing?
In the most recent price list, Oracle Business Intelligence Enterprise Edition Plus is $2000 per Named User or $300,000 per Processor at retail (though most people don't pay retail). If your intended use falls under the terms of the OTN license, you should be able to download the software from the Oracle Technology Network and install it. But you'd have to determine whether the OTN license's terms were sufficient for you or whether you needed a proper license.
As for the system requirements, you'll want to review the documentation on the installation scenarios because it will depend on how many machines you are using and where all the components are being installed. If you are asking about installing the entire stack on a single machine, it had better be a very powerful machine. I couldn't imagine installing on a box with less than 4 GB of RAM and I'd want at least 8 GB before even thinking about it.
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We had the problem when the CPU util on a single core machine went to 100 %. The number of users is 8-10 on a server hosted at the ISP end. When the server was upgraded to 4 core, the same problem persists. We have used Hibernate and JSF for implementation and MySQL as the backend. I strongly feel it is a problem with the JBOSS configuration but unable to fix it. Kindly help
I doubt that anyone is going to be able to help you on this without significantly information than you have provided ... and could reasonably provide in an SO question.
The best I can suggest is that you use jvisualvm and jconsole ... and the host operating system's system monitoring tools ... to try to get a handle on where your system's resources are being used.