Apt is copyright 1997, 1998, 1999 Jason Gunthorpe and others. Apt is licened under the terms of the GNU General Public License (GPL), version 2.0 or later, as published by the Free Software Foundation. See the file COPYING.GPL [included], /usr/share/common-licenses/GPL, or for the terms of the latest version of the GNU General Public License. In addition, prior to November 15th, 2000, apt may be distributed under terms identical to the above with the following addition: Works using apt may link against the GUI library "libqt", copyright by Troll Tech AS, Norway, provided that: 1. The version of "libqt" is licensed under the terms of the "Qt Free Edition License" published by Troll Tech AS. The license terms identified as the Qt Free Edition License below are the only such terms under which distribution of works derived from both apt and "libqt" are permitted; and 2. The source code of the version of "libqt" used is a) Distributed with the binary version; or b) Downloadable by anyone, without fee, using a publicly-announced URL on the Internet, for a duration of at least three years starting with distribution of the binary version. On and after November 15th, 2000, the above additional terms lose all force, and apt will be licensed only under the terms of the GNU General Public License, version 2.0 or later. _______________________________________________________________ The following text, up to the text of the Qt Free Edition License, is informational and not part of the license terms on apt. Modifications to apt in either source or compiled form must be licensed under the terms of the GNU General Public License, version 2.0 (or later), but need not include the above clause permitting usage of the "libqt" library under the Qt Free Edition License. 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