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Can someone explain in short GPL and MIT licenses ?

Posted on 2011-03-24
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Last Modified: 2012-05-11
Hi experts,

I need to understand in simple terms what I can and cannot do with opensource software. For this I'm kindly asking you to explain in simple terms and in short what are my right and obligations for opensource software distributed under GPL and MIT licenses.

More specifically, I need to know the following:
Assume that I have used in my application some parts from an opensource app distributed under the GNU GPL or MIT license.

Can I sell or distribute the compiled application without distributing the source code ?

If the application contains both proprietary code and GPL or MIT code and I'm forced by the licenses to distribute the source, do I have to include in the source distribution the proprietary code also ? Or just publish the modifications I made to the GPL part of the code ?

Thanks,
Peter
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Question by:PeterVarain
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LeeeRussell earned 500 total points
ID: 35205628
This website gives a nice summary of open-source licenses, and I think it answers your questions as well.

http://developer.kde.org/documentation/licensing/licenses_summary.html

I've generally understood the MIT license to allow pretty much anything without you releasing your proprietary code, whereas the GPL would require you to distribute all your source code if you had used GPL code.
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Author Closing Comment

by:PeterVarain
ID: 35221485
Thanks !
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