Take the 2-minute tour ×  Sorry, but I've not been able to
locate anything (even on the official pages) informing me of the
differences between the two versions.  Even a query on their
official forum has been unanswered for many months -  The
license page talks a bit about the "internal" differences
CKEditor Commercial License - CKSource Closed Distribution
License - CDL  This license offers a very flexible way to
integrate CKEditor in your commercial application. These are the
main advantages it offers over an Open Source license:  *
Modifications and enhancements doesn't need to be released under
an Open Source * There is no need to distribute any Open Source
license terms alongside with your   product and no reference to
it have to be done; * No references to CKEditor have to be done
in any file distributed with your  * The source code of CKEditor
doesn’t have to be distributed alongside with your * You can
remove any file from CKEditor when integrating it with your
product. share|improve this question  2