All are separate companies. As with any maker of Linux CD-ROMs, Caldera, Pacific Hi-Tech, Yggdrasil, and LSL are all free to use Red Hat Linux as the basis for their products. This does, however, make those vendors solely responsible for supporting their product if they want it supported. We can not support other vendors products directly, though users of Red Hat from other vendors are welcomed to participate in our mailing lists and make complete use of our WWW site and FTP site.