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51 <h1 class="SECT1"><a name="COPYRIGHT" id="COPYRIGHT">9. Privoxy
52 Copyright, License and History</a></h1>
54 <p>Copyright © 2001-2011 by Privoxy Developers <code class=
56 "mailto:ijbswa-developers@lists.sourceforge.net">ijbswa-developers@lists.sourceforge.net</a>></code></p>
58 <p>Some source code is based on code Copyright © 1997 by Anonymous
59 Coders and Junkbusters, Inc. and licensed under the <i class=
60 "CITETITLE">GNU General Public License</i>.</p>
63 <h2 class="SECT2"><a name="AEN1248" id="AEN1248">9.1. License</a></h2>
65 <p><span class="APPLICATION">Privoxy</span> is free software; you can
66 redistribute it and/or modify it under the terms of the <i class=
67 "CITETITLE">GNU General Public License</i>, version 2, as published by
68 the Free Software Foundation.</p>
70 <p>This program is distributed in the hope that it will be useful, but
71 WITHOUT ANY WARRANTY; without even the implied warranty of
72 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the <a class=
74 "http://www.gnu.org/licenses/old-licenses/gpl-2.0.html" target=
75 "_top">GNU General Public License</a> for details.</p>
77 <p>You should have received a copy of the <i class="CITETITLE">GNU
78 GPL</i> along with this program; if not, write to the</p>
80 <p class="ADDRESS"> Free Software<br>
81 Foundation, Inc. <span class="STREET">51 Franklin
82 Street, Fifth Floor</span><br>
83 <span class="CITY">Boston</span>, <span class=
84 "STATE">MA</span> <span class="POSTCODE">02110-1301</span><br>
85 <span class="COUNTRY">USA</span> </p>
89 <h2 class="SECT2"><a name="AEN1264" id="AEN1264">9.2. History</a></h2>
91 <p>A long time ago, there was the <a href=
92 "http://www.junkbusters.com/ijb.html" target="_top"><span class=
93 "APPLICATION">Internet Junkbuster</span></a>, by Anonymous Coders and
94 <a href="http://www.junkbusters.com/" target="_top">Junkbusters
95 Corporation</a>. This saved many users a lot of pain in the early days
96 of web advertising and user tracking.</p>
98 <p>But the web, its protocols and standards, and with it, the
99 techniques for forcing ads on users, give up autonomy over their
100 browsing, and for tracking them, keeps evolving. Unfortunately, the
101 <span class="APPLICATION">Internet Junkbuster</span> did not. Version
102 2.0.2, published in 1998, was (and is) the last official <a href=
103 "http://www.junkbusters.com/ijbdist.html#release" target=
104 "_top">release</a> available from <a href="http://www.junkbusters.com"
105 target="_top">Junkbusters Corporation</a>. Fortunately, it had been
106 released under the GNU <a href=
107 "http://www.gnu.org/licenses/old-licenses/gpl-2.0.html" target=
108 "_top">GPL</a>, which allowed further development by others.</p>
110 <p>So Stefan Waldherr started maintaining an improved version of the
111 software, to which eventually a number of people contributed patches.
112 It could already replace banners with a transparent image, and had a
113 first version of pop-up killing, but it was still very closely based on
114 the original, with all its limitations, such as the lack of HTTP/1.1
115 support, flexible per-site configuration, or content modification. The
116 last release from this effort was version 2.0.2-10, published in
119 <p>Then, some <a href=
120 "http://www.privoxy.org/user-manual/copyright.html#AUTHORS" target=
121 "_top">developers</a> picked up the thread, and started turning the
122 software inside out, upside down, and then reassembled it, adding many
123 <a href="http://www.privoxy.org/user-manual/introduction.html#FEATURES"
124 target="_top">new features</a> along the way.</p>
126 <p>The result of this is <span class="APPLICATION">Privoxy</span>,
127 whose first stable version, 3.0, was released August, 2002.</p>
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