Tested platforms and tools The DITA Open Toolkit (DITA-OT) has been tested against certain versions of Ant, ICU for Java, JDK, operating systems, XML parsers, and XSLT processors. Application Tested version Ant Ant 1.7.1 Ant 1.8.2, 1.8.3, 1.8.4 ICU for Java ICU4J 3.4.4 ICU4J 49.1 JDK IBM 1.6 OpenJDK 1.7 Oracle 1.6 Operating system Mac OS X 10.6 Mac OS X 10.7 SLES 10 Windows XP Windows 7 XML parser Xerces 2.9.0 Xerces 2.11.0 XSLT processor Saxon 6.5 Saxon 9 Saxon-B 9.1 Saxon-PE/EE 9.3 Xalan-J 2.6 Xalan-J 2.7 Xalan-J 2.7.1 The DITA-OT does not officially require XSLT 2.0, since some users are reliant on Xalan.