Just a few years ago, using open source software was a major "no no" at most major corporations, including my own. However, the software world has changed so dramatically that open source software is now part of almost any corporate environment. Thus, please link over to the O'Reilly web site and read up on the subject. They have an eBook, which you may download w/o charge titled: "Understanding Open Source and Free Software Licensing". You will be glad you took the time.
While I knew of this book, and other texts that O'Reilly makes available without charge, Jane's eLearning Pick of the Day was a good reminder for me. You will already find this book and other texts in my Engineering Learning Wiki's Manuals Section.