Combining Licensing Models
Nothing obliges a licensor to release all of its software under an open source license. Even companies that are friendly to open source may decide that some of their software should be kept proprietary.
A good example of this is Jabber, Inc., which creates and distributes instant messaging software. Jabber comes in both client and server versions. The client versions of Jabber's software are open source and the server versions of Jabber's software are not.
Jabber on user desktops is fostered by the easy availability of open source client software, available for free download from the www.jabber.org website. Meanwhile, companies can build proprietary instant messaging applications tailored to their needs on top of Jabber's ...
Get Open Source Licensing: Software Freedom and Intellectual Property Law now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
