dcm4che is a collection of open source applications and utilities for the healthcare enterprise. These applications have been developed in the Java programming language for performance and portability, supporting deployment on JDK 1.4 and up.
JDCM class library implements DICOM in a quickly and 100% pure JavaTM. It provides an implementation of all basic DICOM functionalities in a powerful and easy-to-use library API.
1T3XT offers a suite of products that are useful to create and/or manipulate documents, more specifically PDF and RTF documents. There's some support for XML and HTML, but this isn't the core business of iText.
At4J provides Java support for reading and creating Zip and Tar archives. It also comes with third-party compression libraries for bzip2 and LZMA support. At4J supports more Zip capabilities and compression methods than Java's built-in Zip classes, such as Unix file metadata and bzip2 compression.
This is a stand-alone DICOM toolkit that implements code for reading and creating DICOM data, DICOM network and file support, a database of DICOM objects, support for display of directories, images, reports and spectra, and DICOM object validation.