Original sentence: Also, ReiserFS (Namesys) and Cygwin (Red Hat are GPLed programs for which other licenses are offered.Examples of such companies include MySQL AB, Trolltech (Qt).This is problematic for them, as they have distributed Linux and other GPLed code (their Caldera distribution), and had no right to do so except under the GPL
Edited sentence: Examples of such companies include MySQL AB and Trolltech (Qt)