Even if this terminology does not belong to the Free Software movement/culture…no wonder that a lot of people end up having some confusion and misunderstanding about these difficult issues:

Follows the abstract of the entry for the term open source:computer software whose source code is put into the public domain, subject to the restriction that any improvements or derived software also include the source code and be put into the public domain. Open source refers . . . → Read More: Encyclopaedia Britannica & open source software