The majority of files in the V7/x86 distribution derive from UNIX Version 7 source code, and a few from 32V UNIX source code. The source to these early versions of UNIX was released by Caldera International, Inc. in January 2002 under a Berkeley-style license. The online UNIX Archive at The UNIX Heritage Society (TUHS) contains a copy of the Caldera letter to this effect, and a copy of the letter in text format is in the file /usr/release/LICENSE in the V7/x86 distribution. It is also available here: LICENSE

The V7/x86 distribution contains components from the Amsterdam Compiler Kit (ACK) developed at the Vrije Universiteit, Amsterdam, and released under a Berkeley-style license.

The V7/x86 distribution contains components from the Berkeley Software Distribution (BSD) developed at, or contributed to, the University of California at Berkeley and released under a Berkeley license.

Modifications, enhancements, and additions to the supplied software are by Robert Nordier, and they and the overall distribution have been released under a Berkeley-style license.

The file COPYRIGHT in the root directory of the V7/x86 distribution reproduces the text of the various copyright notices. It is also available here: COPYRIGHT.