- Apache Commons Collection 4.2 (Apache License 2.0), see, https://commons.apache.org/proper/commons-collections/
- Apache Log4J (Apache License 2.0), see https://logging.apache.org/log4j/1.2/
- Java Mail (COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL)), see https://javaee.github.io/javamail/
- Sencha ExtJS 4.0 (GPL v3), see https://www.sencha.com/products/extjs
- VectorGraphics 0.9.1 (GNU Lesser General Public License (LGPL)), see http://trac.erichseifert.de/vectorgraphics2d/