GeoGebra - Dynamic Mathematics for Everyone
http://www.geogebra.org/
  
LICENSE
  You are free to copy, distribute and transmit GeoGebra 
  free of charge for non-commercial purposes 
  (see conditions and details below).  

DEVELOPERS
  * Markus Hohenwarter (Austria & USA): Project leader, since 2001
  * Michael Borcherds (UK): Lead developer, since 2007
  * Yves Kreis (Luxembourg): Developer, since 2005

Contributions by Loic Le Coq (Paris, France 2006); Joan Carles Naranjo, Victor Franco, 
  Eloi Puertas (Barcelona, Spain 2007); Philipp Weissenbacher (Vienna, Austria 2007); 
  Cong Liu, Amy Varkey, and Quan Yuan (Florida Atlantic University, USA 2007-2009);
  Hans-Petter Ulven (Norway 2008); Florian Sonner (Germany 2008);
  George Sturr (Sebastopol, USA 2009)
  
TRANSLATIONS
  * Arabic: Brahim Boulakbech, Haboubi Abdessalem (Tunisia), Maha Ah (Egypt)
  * Basque: Gonzalo Elcano Vizcay (Spain)
  * Bosnian: Maja Hrbat (Bosnia and Herzegovina)
  * Bulgarian: Hristo Stoyanov (Bulgaria)
  * Catalan: Jaume Bartroli, Pep Bujosa, Josep Lluis Canadilla, Carlos Gimenez, Antoni Goma, Jorge Sanchez,      
      Roser Sebastian (Spain)
  * Chinese (Traditional): Fu-Kwun Hwang, Chen-Hui Lin, Pegasus Roe, Joe Chen (Taiwan)
  * Chinese (Simplified): Chen Xing (China)
  * Croatian: Sime Suljic, Ela Rac, Josip Klicinovic (Croatia)
  * Czech: Marie Pokorna, Pavel Sokol (Czech Republic)
  * Danish: Steen Grode (Denmark)
  * Dutch: Beatrijs Versichel, Ivan De Winne, Pedro Tytgat, Carel van de Giessen (Belgium)
  * English: Markus Hohenwarter, Judith Hohenwarter (Austria), Yves Kreis (Luxembourg),
      Michael Borcherds (Great Britain)
  * Estonian: Jane Albre (Estonia)
  * Finnish: Hannu Korhonen, Juha Leino, Kirsi Malinen (Finland)
  * French: Noel Lambert (France)
  * Galician: Jesus Garcia Otero, Irene Arias Lopez (Spain) 
  * Georgian: Lasha Kokilashvili (Georgia)
  * German: Markus Hohenwarter, Judith Hohenwarter (Austria), Yves Kreis (Luxembourg)
  * Greek: Nicholas Mousoulides, Constantinos Christou (Cyprus), 
      Spiros Mavrogiannis, Manolis Koutlis, Fergadiotis Athanasios (Greece)
  * Hebrew: Guy Hed (Israel)
  * Hungarian: Zsuzsanna Papp-Varga, Andras Hrasko, Peter Csiba, Major Zoltan (Hungary)
  * Icelandic: Freyja Hreinsdottir (Iceland)
  * Indonesian: Aam Sudrajat (Indonesia)
  * Italian: Alessandra Tomasi, Simona Riva (Italy)
  * Japanese: Akihito Wachi, Kazuhiro Hasegawa (Japan)
  * Korean: Kyeong-Sik Choi (Korea)
  * Lithuanian: Rokas Tamosiunas (Lithuania)
  * Macedonian: Linda Fahlberg-Stojanovska, OIKT, Faculty of Technical Sciences, UKLO (FYR Macedonia)
  * Norwegian: Sigbjorn Hals (Norway)
  * Persian: Saeed Aminorroaya, Ali SafarNavadeh, Azam Zabihi (Iran)
  * Polish: Ania Borkowska, Marzanna Miasko, Malgorzata Paliga, Ewa Piwek, Edyta Pobiega, Kasia Winkowska-Nowak (Poland)
  * Portuguese (Brazil): Humberto Bortolossi, Herminio Borges Neto, Alana Paula, 
      Luciana de Lima, Araujo Freitas, Alana Souza de Olivieira (Brazil)
  * Portuguese (Portugal): Jorge Geraldes, Antonio Ribeiro (Portugal)
  * Russian: Anatoly Scherbakov, Beatrice Versichel (Russia)
  * Serbian: Djordje Herceg, Dragoslav Herceg (Serbia)
  * Slovak: Peter Csiba, Iveta Kohanova (Slovakia)
  * Slovenian: Stanislav Senveter (Slovenia)
  * Swedish: Jonas Enlund (Finland), Thomas Lingefjard (Sweden)
  * Spanish: Liliana Saidon (Argentina)
  * Turkish: Erol Karakirik, Mustafa Dogan, Suleyman Cengiz (Turkey)
  * Vietnamese: Nguyen Thanh Trung, Quang Nguyen (Vietnam)
  * Welsh: Uned Gyfieithu Translation Unit, Prifysgol Bangor University; Gwyn Jones (Wales)
   
PROJECTS
  * Florida Atlantic University
     08/2006 to 07/2009: NSF Math and Science Partnership project SMGEM
  * University of Luxembourg et. al., co-funded by the Community programme eContentplus
     09/2007 to 09/2010: Interoperable Interactive Geometry for Europe (Intergeo)
  * University of Luxembourg
     01/2007 to 12/2009: GeoGebra for Primary School 
  * Austrian Federal Ministry for Education, Science and Culture
     01/2006 to 12/2007: GeoGebra for Austrian Schools
  * Austrian Academy of Sciences
     02/2004 to 01/2006: DOC scholarship for Markus Hohenwarter
     
SUPPORT 
  * Department of Mathematical Sciences, Florida Atlantic University
      Prof. Heinz-Otto Peitgen and Prof. Richard Voss, NSF MSP project SMGEM
      2007-2009: support of software development with students Cong Liu, Amy Varkey, and Quan Yuan
      2006-2009: support of workshops and presentations throughout the USA
  * Faculty LSHASE, University of Luxembourg
      since 2009: hosting the GeoGebra website
      since 2005: providing the multi-platform software deployment solution
  * Department of Mathematics, University of Salzburg
      2002-2009: hosting the GeoGebra website   
  
SOFTWARE
  * MathPiper, https://mathrider.dev.java.net
  * Jasymca, http://webuser.hs-furtwangen.de/~dersch/
  * Jama, http://math.nist.gov/javanumerics/jama/
  * FreeHEP Java Libraries, http://java.freehep.org
  * Java EPS Graphics2D package, http://www.jibble.org/epsgraphics
  * HotEqn, http://www.atp.rub.de/VCLab/software/HotEqn/HotEqn.html
  * Tango Icon Gallery, http://tango.freedesktop.org
  
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GeoGebra - Dynamic Mathematics for Everyone
http://www.geogebra.org/

                                LICENSE

1) GeoGebra Language Files and Documentation License:
   Creative Commons Attribution-Share Alike 3.0 or later

2) GeoGebra Source Code License:
   GNU General Public License v2 or later

3) GeoGebra Installers License:
   Creative Commons Attribution-Noncommercial-Share Alike 3.0 or later

Note for Commercial Users (e.g. publishers or online schools)
  If you would like to use GeoGebra applets, installers, or documentation
  for commercial purposes and put the resulting work under your copyright
  (e.g. for books, online courses, or on websites under your own copyright),
  you can do so by setting up a commercial usage agreement with GeoGebra. 
  Please write to office@geogebra.org for details and we will help you to
  find a simple and good solution for your specific purposes.

Note for Non-commercial Users (e.g private, schools, or universities)
  You may use and distribute GeoGebra free of charge at home, 
  in school and universities under the conditions explained below.

----------------------------------------------------------------------

1) GeoGebra Language Files and Documentation License

   All GeoGebra language and documentation files are subject to 
   the following Creative Commons Attribution-Share Alike License; 
   either version 3.0 of the License, or (at your option) any later 
   version (see http://creativecommons.org/licenses/by-sa/3.0/):

   You are free to copy, distribute, transmit, and adapt GeoGebra 
   language files and documentation under the following conditions:
    * Attribution. You must attribute the work
        (i.e. by linking to http://www.geogebra.org/)
    * Share Alike. If you alter, transform, or build upon this work, 
        you may distribute the resulting work only under the same, 
        similar or a compatible license.

   GeoGebra file types that are subject to the abovmentioned license:
    * GeoGebra language files are ...
        the user interface language files ("properties files") for 
        all languages used by the GeoGebra application and applets. 
        They are part of every official GeoGebra binary distribution.
    * GeoGebra documentation files are ...
        all "GeoGebra Help", "GeoGebra Quickstart" and other 
        documentation files found on the GeoGebra webserver.

----------------------------------------------------------------------

2) GeoGebra Source Code License

   GeoGebra's source code is subject to the GNU General Public License
   (see http://www.gnu.org/licenses/):

   This program is free software; you can redistribute it and/or modify 
   it under the terms of the GNU General Public License as published by 
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful, 
   but WITHOUT ANY WARRANTY; without even the implied warranty of 
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
   GNU General Public License for more details.

   You can find GeoGebra's source code at 
     http://www.geogebra.org/source/program/
   If you would like to help with programming, please write to 
     office@geogebra.org

----------------------------------------------------------------------

3) GeoGebra Installers License

   All GeoGebra installers are subject to the following Creative Commons 
   Attribution-Noncommercial-Share Alike License; either version 3.0 of 
   the License, or (at your option) any later version 
   (see http://creativecommons.org/licenses/by-nc-sa/3.0/):

   You are free to copy, distribute, transmit, and adapt GeoGebra 
   installers under the following conditions:
    * Attribution. You must attribute the work
        (i.e. by linking to http://www.geogebra.org/)
    * Noncommercial. You may not use this work for commercial purposes
        (unless you have approval from GeoGebra, please contact us
         at office@geogebra.org).
    * Share Alike. If you alter, transform, or build upon this work, 
        you may distribute the resulting work only under the same, 
        similar or a compatible license.

   GeoGebra installers are ...
     installation packages that let you install the GeoGebra 
     application and/or documentation files on your system 
     (MS Windows, Mac OS X, Linux, etc.) including GeoGebra WebStart.