According to the manual (some of these have more restrictive licenses than GPL, some have less restrictive licenses):
This software is based in part on the work of the Independent
JPEG Group.
The Graphics Interchange Format© is the Copyright property of
CompuServe Incorporated. GIF SM is a Service Mark property of
CompuServe Incorporated.
Adobe® Flash® Player. Copyright © 1996-2007 Adobe Systems
Incorporated. All Rights Reserved. Protected by U.S. Patent
6,879,327; Patents Pending in the United States and other
countries. Adobe and Flash are either trademarks or registered
trademarks in the United States and/or other countries.
This product includes software under following licenses and
developed by following copyrightholders:
• Computing Services at Carnegie Mellon University
(http://www.cmu.edu/computing/)
• Tommi Komulainen (Tommi.Komulainen@iki.fi)
• The OpenSSL Project for use in the OpenSSL Toolkit
(http://www.openssl.org)
• Pedro Roque Marques
• Eric Rosenquist, Srata Software Limited
• The XFree86 Project, Inc (http://www.xfree86.org) and its
contributors
• Paul macKerras (paulus@samba.org)
• Purdue Research Foundation
• OpenEvidence Project for use in the OpenEvidence Toolkit
(http://www.openevidence.org/)
• Eric Young (eay@cryptsoft.com)
• Tim Hudson (tjh@cryptsoft.com)
Copyright © 1996 NVIDIA, Corp. NVIDIA design
pending in the U.S. and foreign countries.