StackOverflow2013

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POMulti-licensing and license compatibility for open source projects?
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copied!<p>I'm starting a software project that I'd ultimately like to release as free, open-source and free of charge.</p> <p>My software makes use of other free/open-source software, like Markdown (released under a BSD license), Blueprint CSS (released under an MIT license), and others that use various licenses (GPL, etc.). Some are copyleft, some are not.</p> <p>I will also choose a license for myself. (Haven't decided yet, but I do have plenty of resources for comparing them.)</p> <p>I would like to know if there are any resources for navigating the confusing world of license compatibility. I've googled but haven't found much. I know that some licenses are 'GPL-compatible', but I would like to know:</p> <p>1) Which licenses require derivative works to be released under the same license?</p> <p>2) Which popular licenses are incompatible with each other?</p> <p>3) Is there anything you can do in that case other than abandoning your hopes and dreams or reinventing the wheel?</p> <p>4) I've read that releasing software under multiple licenses allows the user to pick the license terms that they prefer. Must it be that way? What if I have two compatible licenses but I need to release my software under both of them because some code I've used requires that based on its licenses?</p> <p>If it changes anything, this software is for an academic project.</p> <p>I'm a programmer, not a lawyer! I'd appreciate your help.</p>

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