GeoGebra's Licence

Please read this carefully: trunk/geogebra/desktop/_LICENSE.txt

Sources for used libraries

The following tools are used as part of GeoGebra's software development process and may be found for convenience in our source versioning system. Below you can find references to the project websites and/or source code of these tools.

Development and testing

OpenCSV

Used for parsing CSV for importing into the spreadsheet ​http://opencsv.sourceforge.net/ (Apache 2.0)

org-concord-sensor

This is used to allow communication with USB Data Loggers. Sources (LGPL) available here: ​http://code.google.com/p/org-concord-sensor/

OpenNI: Used to communicate with Kinect ​https://github.com/OpenNI/OpenNI/zipball/Stable-1.5.2.23 (GPL / LGPL)

zxing 1.7

Used for BarCode command ​http://zxing.googlecode.com/files/ZXing-1.7.zip (Apache 2.0)

JFugue 2.1

Used for PlaySound command ​http://www.jfugue.org/jfugue-2.1.zip (LGPL)

jogl 1.1.1a

Original sources (BSD License) are available here: ​http://java.net/projects/jogl/sources/svn/show and ​http://kenai.com/projects/jogl/sources/jogl-git/show

jogl 2

Original sources (BSD License ​http://jogamp.org/git/?p=jogl.git;a=blob;f=LICENSE.txt) are available here: ​https://github.com/sgothel/jogl (git repository)

gluegen

Original sources (BSD License) are available here: ​http://java.net/projects/gluegen/sources/svn/show and ​http://kenai.com/projects/gluegen/sources/gluegen-git/show

​J2DXX

Used for integrating the expEYES / Phoenix. Original sources (BSD License) are available here: ​http://sourceforge.net/projects/d2xx/

​Jython

Original sources (PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2) are available here: ​https://jython.svn.sourceforge.net/svnroot/jython/tags/Release_2_5_2/

JavaCC

​http://javacc.java.net/ This is used for turning kernel.parser.parser.jj into *.java files
Source: ​http://java.net/projects/javacc/sources/svn/show/trunk. License: BSD

jlatexmath.jar (GPLv2+)

Sources can be found at ​http://forge.scilab.org/index.php/p/jlatexmath/source/tree/master

FreeHEP

used for exporting SVG, PDF etc. This branch is used from GeoGebra 4 ​http://java.freehep.org/svn/repos/freehep/list/freehep/branches/vectorgraphics-emfplus/?revision=HEAD but with some important patches applied eg ​http://dev.geogebra.org/trac/changeset/7436/trunk/geogebra/org/freehep/graphicsio/AbstractVectorGraphicsIO.java

zip.js

A JavaScript library to zip and unzip files. ​http://gildas-lormeau.github.com/zip.js/

Others

sources for all other libraries used are in GeoGebra's SVN repository: ​http://dev.geogebra.org/trac/browser

Packaging official GeoGebra files

ProGuard

This is used for making the jar files (much!) smaller by stripping out unused classes and obfuscating names. Sources are attached at the bottom of this page (obtained from ​http://sourceforge.net/projects/proguard/files/proguard/ GPL Licence)

JDT Core Batch Compiler (also known as Eclipse Java Compiler)

For batch compilation (prior to signing a packing the jar files) we also use the built-in compiler of Eclipse, due to ​http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6351684 and ​http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5078608 - these problems are not resolved yet for Sun Java compilers). Source (Eclipse Public License 1.0): ​http://download.eclipse.org/eclipse/downloads/drops/R-3.6.2-201102101200/index.php

P200Ant

Sources are in the tools_p200ant_java5only.jar file in SVN (Taken from ​http://www.matthiasmann.de/java/p200ant.tgz (BSD license) with a small modification to P200AntTask.java to workaround this bug ​http://bugs.sun.com/view_bug.do?bug_id=6712743 ) if (!System.getProperty("java.version").startsWith("1.5")) throw new BuildException("Must be run under Java 1.5");

Java Runtime Environment (JRE)

For Linux portable packages we bundle JRE 1.6 as well. Its license is Sun Microsystem, Inc. Binary Code License Agreement (BCL), ​http://java.sun.com/javase/6/jre-6u2-license.txt. The original packages can be downloaded from ​http://java.com/en/download/manual.jsp?locale=en

Nullsoft Scriptable Install System (NSIS) and UltraModernUI (UMUI)

The windows installer for GeoGebra is based on NSIS and UMUI. Both are of zlib/libpng license. We use NSIS version 2.46 with UMUI 1.00 (2009-12-25) from ​http://sourceforge.net/projects/ultramodernui/files/UltraModernUI/UltraModernUI%201.00b2-dev/

OpenSSL-based signcode utility (osslsigncode)

Used for signing the Windows installer. License: GNU General Public License 2. Its original webpage (including source code): ​http://sourceforge.net/projects/osslsigncode/