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29 <h1 class="SECT1"><a name="COPYRIGHT">12. Privoxy Copyright, License and History</a></h1>
30 <p>Copyright © 2001-2020 by Privoxy Developers <code class="EMAIL"><<a href=
31 "mailto:privoxy-devel@lists.privoxy.org">privoxy-devel@lists.privoxy.org</a>></code></p>
32 <p>Some source code is based on code Copyright © 1997 by Anonymous Coders and Junkbusters, Inc. and licensed
33 under the <i class="CITETITLE">GNU General Public License</i>.</p>
34 <p><span class="APPLICATION">Privoxy</span> is free software; you can redistribute and/or modify its source code
35 under the terms of the <i class="CITETITLE">GNU General Public License</i> as published by the Free Software
36 Foundation, either version 2 of the license, or (at your option) any later version.</p>
37 <p>The same is true for <span class="APPLICATION">Privoxy</span> binaries unless they are linked with <a href=
38 "https://tls.mbed.org/" target="_top">mbed TLS</a> in which case you can redistribute them and/or modify them under
39 the terms of the <i class="CITETITLE">GNU General Public License</i> as published by the Free Software Foundation,
40 either version 3 of the license, or (at your option) any later version.</p>
41 <p>Both licenses are included in the next section.</p>
43 <h2 class="SECT2"><a name="LICENSE">12.1. License</a></h2>
45 <h3 class="SECT3"><a name="GPLV2">12.1.1. GNU General Public License version 2</a></h3>
46 <table border="0" bgcolor="#E0E0E0" width="100%">
49 <pre class="SCREEN"> GNU GENERAL PUBLIC LICENSE
52 Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
53 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
54 Everyone is permitted to copy and distribute verbatim copies
55 of this license document, but changing it is not allowed.
59 The licenses for most software are designed to take away your
60 freedom to share and change it. By contrast, the GNU General Public
61 License is intended to guarantee your freedom to share and change free
62 software--to make sure the software is free for all its users. This
63 General Public License applies to most of the Free Software
64 Foundation's software and to any other program whose authors commit to
65 using it. (Some other Free Software Foundation software is covered by
66 the GNU Lesser General Public License instead.) You can apply it to
69 When we speak of free software, we are referring to freedom, not
70 price. Our General Public Licenses are designed to make sure that you
71 have the freedom to distribute copies of free software (and charge for
72 this service if you wish), that you receive source code or can get it
73 if you want it, that you can change the software or use pieces of it
74 in new free programs; and that you know you can do these things.
76 To protect your rights, we need to make restrictions that forbid
77 anyone to deny you these rights or to ask you to surrender the rights.
78 These restrictions translate to certain responsibilities for you if you
79 distribute copies of the software, or if you modify it.
81 For example, if you distribute copies of such a program, whether
82 gratis or for a fee, you must give the recipients all the rights that
83 you have. You must make sure that they, too, receive or can get the
84 source code. And you must show them these terms so they know their
87 We protect your rights with two steps: (1) copyright the software, and
88 (2) offer you this license which gives you legal permission to copy,
89 distribute and/or modify the software.
91 Also, for each author's protection and ours, we want to make certain
92 that everyone understands that there is no warranty for this free
93 software. If the software is modified by someone else and passed on, we
94 want its recipients to know that what they have is not the original, so
95 that any problems introduced by others will not reflect on the original
98 Finally, any free program is threatened constantly by software
99 patents. We wish to avoid the danger that redistributors of a free
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104 The precise terms and conditions for copying, distribution and
107 GNU GENERAL PUBLIC LICENSE
108 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
110 0. This License applies to any program or other work which contains
111 a notice placed by the copyright holder saying it may be distributed
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125 Whether that is true depends on what the Program does.
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162 These requirements apply to the modified work as a whole. If
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321 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
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328 END OF TERMS AND CONDITIONS
330 How to Apply These Terms to Your New Programs
332 If you develop a new program, and you want it to be of the greatest
333 possible use to the public, the best way to achieve this is to make it
334 free software which everyone can redistribute and change under these terms.
336 To do so, attach the following notices to the program. It is safest
337 to attach them to the start of each source file to most effectively
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339 the "copyright" line and a pointer to where the full notice is found.
341 <one line to give the program's name and a brief idea of what it does.>
342 Copyright (C) <year> <name of author>
344 This program is free software; you can redistribute it and/or modify
345 it under the terms of the GNU General Public License as published by
346 the Free Software Foundation; either version 2 of the License, or
347 (at your option) any later version.
349 This program is distributed in the hope that it will be useful,
350 but WITHOUT ANY WARRANTY; without even the implied warranty of
351 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
352 GNU General Public License for more details.
354 You should have received a copy of the GNU General Public License along
355 with this program; if not, write to the Free Software Foundation, Inc.,
356 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
358 Also add information on how to contact you by electronic and paper mail.
360 If the program is interactive, make it output a short notice like this
361 when it starts in an interactive mode:
363 Gnomovision version 69, Copyright (C) year name of author
364 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
365 This is free software, and you are welcome to redistribute it
366 under certain conditions; type `show c' for details.
368 The hypothetical commands `show w' and `show c' should show the appropriate
369 parts of the General Public License. Of course, the commands you use may
370 be called something other than `show w' and `show c'; they could even be
371 mouse-clicks or menu items--whatever suits your program.
373 You should also get your employer (if you work as a programmer) or your
374 school, if any, to sign a "copyright disclaimer" for the program, if
375 necessary. Here is a sample; alter the names:
377 Yoyodyne, Inc., hereby disclaims all copyright interest in the program
378 `Gnomovision' (which makes passes at compilers) written by James Hacker.
380 <signature of Ty Coon>, 1 April 1989
381 Ty Coon, President of Vice
383 This General Public License does not permit incorporating your program into
384 proprietary programs. If your program is a subroutine library, you may
385 consider it more useful to permit linking proprietary applications with the
386 library. If this is what you want to do, use the GNU Lesser General
387 Public License instead of this License.
394 <h3 class="SECT3"><a name="GPLV3">12.1.2. GNU General Public License version 3</a></h3>
395 <table border="0" bgcolor="#E0E0E0" width="100%">
398 <pre class="SCREEN"> GNU GENERAL PUBLIC LICENSE
399 Version 3, 29 June 2007
401 Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
402 Everyone is permitted to copy and distribute verbatim copies
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412 the GNU General Public License is intended to guarantee your freedom to
413 share and change all versions of a program--to make sure it remains free
414 software for all its users. We, the Free Software Foundation, use the
415 GNU General Public License for most of our software; it applies also to
416 any other work released this way by its authors. You can apply it to
419 When we speak of free software, we are referring to freedom, not
420 price. Our General Public Licenses are designed to make sure that you
421 have the freedom to distribute copies of free software (and charge for
422 them if you wish), that you receive source code or can get it if you
423 want it, that you can change the software or use pieces of it in new
424 free programs, and that you know you can do these things.
426 To protect your rights, we need to prevent others from denying you
427 these rights or asking you to surrender the rights. Therefore, you have
428 certain responsibilities if you distribute copies of the software, or if
429 you modify it: responsibilities to respect the freedom of others.
431 For example, if you distribute copies of such a program, whether
432 gratis or for a fee, you must pass on to the recipients the same
433 freedoms that you received. You must make sure that they, too, receive
434 or can get the source code. And you must show them these terms so they
437 Developers that use the GNU GPL protect your rights with two steps:
438 (1) assert copyright on the software, and (2) offer you this License
439 giving you legal permission to copy, distribute and/or modify it.
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1020 How to Apply These Terms to Your New Programs
1022 If you develop a new program, and you want it to be of the greatest
1023 possible use to the public, the best way to achieve this is to make it
1024 free software which everyone can redistribute and change under these terms.
1026 To do so, attach the following notices to the program. It is safest
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1031 <one line to give the program's name and a brief idea of what it does.>
1032 Copyright (C) <year> <name of author>
1034 This program is free software: you can redistribute it and/or modify
1035 it under the terms of the GNU General Public License as published by
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1037 (at your option) any later version.
1039 This program is distributed in the hope that it will be useful,
1040 but WITHOUT ANY WARRANTY; without even the implied warranty of
1041 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1042 GNU General Public License for more details.
1044 You should have received a copy of the GNU General Public License
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1047 Also add information on how to contact you by electronic and paper mail.
1049 If the program does terminal interaction, make it output a short
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1052 <program> Copyright (C) <year> <name of author>
1053 This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
1054 This is free software, and you are welcome to redistribute it
1055 under certain conditions; type `show c' for details.
1057 The hypothetical commands `show w' and `show c' should show the appropriate
1058 parts of the General Public License. Of course, your program's commands
1059 might be different; for a GUI interface, you would use an "about box".
1061 You should also get your employer (if you work as a programmer) or school,
1062 if any, to sign a "copyright disclaimer" for the program, if necessary.
1063 For more information on this, and how to apply and follow the GNU GPL, see
1064 <https://www.gnu.org/licenses/>.
1066 The GNU General Public License does not permit incorporating your program
1067 into proprietary programs. If your program is a subroutine library, you
1068 may consider it more useful to permit linking proprietary applications with
1069 the library. If this is what you want to do, use the GNU Lesser General
1070 Public License instead of this License. But first, please read
1071 <https://www.gnu.org/licenses/why-not-lgpl.html>.
1079 <h2 class="SECT2"><a name="HISTORY">12.2. History</a></h2>
1080 <p>A long time ago, there was the <span class="APPLICATION">Internet Junkbuster</span>, by Anonymous Coders and
1081 Junkbusters Corporation. This saved many users a lot of pain in the early days of web advertising and user
1083 <p>But the web, its protocols and standards, and with it, the techniques for forcing ads on users, give up
1084 autonomy over their browsing, and for tracking them, keeps evolving. Unfortunately, the <span class=
1085 "APPLICATION">Internet Junkbuster</span> did not. Version 2.0.2, published in 1998, was the last official
1086 release, available from Junkbusters Corporation. Fortunately, it had been released under the GNU <a href=
1087 "http://www.gnu.org/licenses/old-licenses/gpl-2.0.html" target="_top">GPL</a>, which allowed further development
1089 <p>So Stefan Waldherr started maintaining an improved version of the software, to which eventually a number of
1090 people contributed patches. It could already replace banners with a transparent image, and had a first version of
1091 pop-up killing, but it was still very closely based on the original, with all its limitations, such as the lack
1092 of HTTP/1.1 support, flexible per-site configuration, or content modification. The last release from this effort
1093 was version 2.0.2-10, published in 2000.</p>
1094 <p>Then, some <a href="https://www.privoxy.org/user-manual/copyright.html#AUTHORS" target="_top">developers</a>
1095 picked up the thread, and started turning the software inside out, upside down, and then reassembled it, adding
1096 many <a href="https://www.privoxy.org/user-manual/introduction.html#FEATURES" target="_top">new features</a>
1098 <p>The result of this is <span class="APPLICATION">Privoxy</span>, whose first stable version, 3.0, was released
1100 <p>As of 2012 the Junkbusters Corporation's website (http://www.junkbusters.com/) has been shut down, but Privoxy
1101 is still actively maintained.</p>
1104 <h2 class="SECT2"><a name="AUTHORS">12.3. Authors</a></h2>
1105 <p>Current Privoxy Team:</p>
1106 <p class="LITERALLAYOUT"> Fabian Keil, lead developer<br>
1107 David Schmidt<br>
1108 Lee Rian<br>
1109 Roland Rosenfeld<br>
1110 Ian Silvester</p>
1111 <p>Former Privoxy Team Members:</p>
1112 <p class="LITERALLAYOUT"> Johny Agotnes<br>
1113 Rodrigo Barbosa<br>
1114 Moritz Barsnick<br>
1115 Hal Burgiss<br>
1116 Ian Cummings<br>
1117 Brian Dessent<br>
1118 Jon Foster<br>
1119 Karsten Hopp<br>
1120 Alexander Lazic<br>
1121 Daniel Leite<br>
1122 Gábor Lipták<br>
1123 Adam Lock<br>
1124 Guy Laroche<br>
1125 Justin McMurtry<br>
1126 Mark Miller<br>
1127 Gerry Murphy<br>
1128 Andreas Oesterhelt<br>
1129 Haroon Rafique<br>
1130 Georg Sauthoff<br>
1131 Thomas Steudten<br>
1132 Jörg Strohmayer<br>
1133 Rodney Stromlund<br>
1134 Sviatoslav Sviridov<br>
1135 Sarantis Paskalis<br>
1136 Stefan Waldherr</p>
1137 <p>Thanks to the many people who have tested Privoxy, reported bugs, provided patches, made suggestions, donated
1138 or contributed in some other way. These include (in alphabetical order):</p>
1139 <p class="LITERALLAYOUT"> Rustam Abdullaev<br>
1140 Clint Adams<br>
1141 Maxim Antonov<br>
1142 Anatoly Arzhnikov<br>
1143 Ken Arromdee<br>
1144 Natxo Asenjo<br>
1145 Devin Bayer<br>
1146 Havard Berland<br>
1147 David Binderman<br>
1148 David Bo<br>
1149 Gergely Bor<br>
1150 Francois Botha<br>
1151 Reiner Buehl<br>
1152 Andrew J. Caines<br>
1153 Clifford Caoile<br>
1154 Edward Carrel<br>
1155 Pak Chan<br>
1156 Wan-Teh Chang<br>
1157 Sam Chen<br>
1158 Ramkumar Chinchani<br>
1159 Billy Crook<br>
1160 Frédéric Crozat<br>
1161 Matthew Daley<br>
1162 Michael T. Davis<br>
1163 Markus Dittrich<br>
1164 Mattes Dolak<br>
1165 Matthias Drochner<br>
1166 Peter E.<br>
1167 Florian Effenberger<br>
1168 Markus Elfring<br>
1169 Ryan Farmer<br>
1170 Matthew Fischer<br>
1171 Dean Gaudet<br>
1172 Stephen Gildea<br>
1173 John McGowan<br>
1174 Danny Goossen<br>
1175 Lizik Grelier<br>
1176 Daniel Griscom<br>
1177 Felix Gröbert<br>
1178 Bernard Guillot<br>
1179 Jeff H.<br>
1180 Tim H.<br>
1181 Aaron Hamid<br>
1182 Darel Henman<br>
1183 Magnus Holmgren<br>
1184 Eric M. Hopper<br>
1185 Ralf Horstmann<br>
1186 Ho+ Ho+ Ho+<br>
1187 Nedžad Hrnjica<br>
1188 Stefan Huehner<br>
1189 Basil Hussain<br>
1190 Peter Hyman<br>
1191 Derek Jennings<br>
1192 Andrew Jones<br>
1193 Julien Joubert<br>
1194 Ralf Jungblut<br>
1195 Petr Kadlec<br>
1196 Robert Klemme<br>
1197 Steven Kolins<br>
1199 Stefan Kurtz<br>
1200 Zeno Kugy<br>
1201 David Laight<br>
1202 Bert van Leeuwen<br>
1203 Don Libes<br>
1204 Paul Lieverse<br>
1205 Han Liu<br>
1206 Toby Lyward<br>
1207 Wil Mahan<br>
1208 Jindrich Makovicka<br>
1209 Raphael Marichez<br>
1210 Francois Marier<br>
1211 Angelina Matson<br>
1212 Jonathan McKenzie<br>
1213 David Mediavilla<br>
1214 Raphael Moll<br>
1215 J. Momberger<br>
1216 Mathew Murphy<br>
1217 Amuro Namie<br>
1218 Mark Nelson<br>
1219 Tobias Netzel<br>
1220 John Palkovic<br>
1221 Adam Piggott<br>
1222 Petr Písar<br>
1223 Dan Price<br>
1224 Roberto Ragusa<br>
1225 Félix Rauch<br>
1226 Kai Raven<br>
1227 Marvin Renich<br>
1228 Chris John Riley<br>
1229 Maynard Riley<br>
1230 Ivan Romanov<br>
1231 Andreas Rutkauskas<br>
1233 Bart Schelstraete<br>
1234 Gregory Seidman<br>
1235 Atman Sense<br>
1236 Chung-chieh Shan<br>
1237 Johan Sintorn<br>
1238 Benjamin C. Wiley Sittler<br>
1239 DRS David Soft<br>
1240 Simon South<br>
1241 Dan Stahlke<br>
1242 Oliver Stoeneberg<br>
1243 Václav Švec<br>
1244 Rick Sykes<br>
1245 Spinor S.<br>
1246 Peter Thoenen<br>
1247 Marc Thomas<br>
1248 Martin Thomas<br>
1249 Reuben Thomas<br>
1250 Guybrush Threepwood<br>
1251 Joel Verhagen<br>
1252 Bobby G. Vinyard<br>
1253 Jochen Voss<br>
1254 David Wagner<br>
1255 Glenn Washburn<br>
1256 Song Weijia<br>
1257 Jörg Weinmann<br>
1258 Darren Wiebe<br>
1259 Anduin Withers<br>
1260 withoutname<br>
1261 Eduard Wulff<br>
1262 Yang Xia<br>
1263 Jarry Xu<br>
1264 Oliver Yeoh<br>
1265 Yossi Zahn<br>
1266 Jamie Zawinski</p>
1267 <p>Privoxy is based in part on code originally developed by Junkbusters Corp. and Anonymous Coders.</p>
1268 <p>Privoxy heavily relies on Philip Hazel's PCRE.</p>
1269 <p>The code to filter compressed content makes use of zlib which is written by Jean-loup Gailly and Mark
1271 <p>On systems that lack strptime(), Privoxy is using the one from the GNU C Library written by Ulrich
1275 <div class="NAVFOOTER">
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