Third-party software DITA Open Toolkit uses third-party software components to provide certain features in the core toolkit, Java API, and bundled plug-ins. PDFplug-in, required software third-party software
DITA-OT <keyword keyref="release"/>

DITA-OT core processing uses the following third-party software:

Software Version License AntAnt Apache Commons CodecApache Commons Codec Apache Commons IOApache Commons IO GuavaGuava ICU for Java (ICU4J)ICU for Java (ICU4J) Logback Classic ModuleLogback Classic Module , Saxon Simple Logging Facade for Java (SLF4J)Simple Logging Facade for Java XercesXerces XML APIsXML APIs , XML ResolverXML Resolver
The XML APIs library contains source code for SAX and DOM APIs, which each have their own licenses.
PDF plug-in

The org.dita.pdf2 plug-in relies on additional third-party software to generate PDF output:

Software Version License Apache Commons LoggingApache Commons Logging 1.0.4 Avalon FrameworkAvalon Framework 4.3.1 Apache XML GraphicsApache XML Graphics 2.1 BatikBatik 1.8 FOPApache FOP