DITA-OT requires the following software applications:

Java Runtime Environment (JRE) or Java Development Kit (JDK)

This is the only prerequisite software that you need to install. The remaining required software is included in the distribution package.

Apache Ant

Provides the standard setup and sequencing of processing steps. DITA-OT includes Ant version . You can download Ant from .

XSLT processor

Provides the main transformation services. It must be compliant with XSLT 2.0. DITA-OT includes Saxon version . You can download Saxon from .

Depending on the type of output that you want to generate, you might need the following applications:

ICU for Java

Does the DITA-OT only use ICU for Java for index processing? Index processing is what is explicitly mentioned in the installing topics.ICU for Java is a cross-platform, Unicode-based, globalization library. It includes support for comparing locale-sensitive strings; formatting dates, times, numbers, currencies, and messages; detecting text boundaries; and converting character sets. You can download ICU for Java from .

Microsoft Help Workshop

Required for generating HTML help. You can download the Help Workshop from .

XSL-FO processor

Required for generating PDF output. Apache FOP (Formatting Objects Processor) is included in the distribution package. You can download other versions from . You can also use commercial FO processors such as Antenna House Formatter or RenderX XEP.