<![CDATA[Does using the LGPL mean that all additions to OpenCms must be Open Source as well?]]>
However, if additions or changes to the core system are made, the result is a derivative work, and certain restrictions apply, the most important being that the license used for the derivative work must also be the LGPL.

So companies can develop their additions to OpenCms as a module and choose any license they like. However, the OpenCms core system and all enhancements or additions to it will stay Open Source.]]>