 The corridors were filled with stands from organisations such as the Free Software Foundation Europe and the Free Knowledge Foundation, Debian, Ubuntu, OpenOffice.org ,  etc.
<meaning-changed>  The corridors were filled with stands from organisations such as the Free Software Foundation Europe and the Free Knowledge Foundation, Debian, Ubuntu, OpenOffice.org ,  etc.
 The corridors were filled with stands from organisations such as the and the Free Knowledge Foundation, Debian, Ubuntu, OpenOffice.org , etc.