In order to sell the software that I am creating and for avoiding legal troubles how should I deal with the opensource libraries and opensource code that I borrow to create my software.
I am using about 30% of source code that doesn’t belong to me
I Have Used A Lot Of Opensource Libraries. If I Want To Sell My Software Should I Give Royalties To Those Lib?
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#1 by horus on June 1st, 2009
In general you are not obliged to give away royalties in the sense that whatever is your source it will continue to be yours. This means that you hold the credit for your own code. What else you can keep depends on the specific license of each library you use in your project. Most open source licenses will dictate that whenever you distribute your application you should make the sources for the dependency libraries available to your client. Some dictate that your own sources should be available as well. Some other licenses won’t allow you to distribute your application commercially unless you pay for the library you used.
In brief read the license that comes with each library you used carefully it should be clear what you must, can, or can’t do.