Beta software for parsing CSS (Level 1, 2 or 3) stylesheets from the WWW Consortium (W3C). [Open Source, BSD-like]

Generates elements for various markup languages. Directly supports HTML 4.0 and XML, but can easily be extended to create tags for any markup language. [Open Source, BSD-like]

A pure Java implementation of the zlib data compression library for ZIP and PNG. [Open Source, GPL]

Supports generation of PDF, RTF, and XML documents [Open Source, MPL, LGPL]

A pure Java HTML renderer and parser. It supports HTML 4, Javascript and CSS2.

Library for parsing HTML, written in Java. [Open source, LGPL]

Java library for parsing and modifying HTML documents, including analysis of arbitrary HTML forms to determine the structure of submitted data. [Open source, LGPL]

Tools for compressing, uncompressing (for hand editing), obtaining metadata, splitting and merging, encrypting and decrypting, validating, imposition (aka n-up), making page images, extracting text, and full-text indexing (with Lucene) of PDF, HTML an...

Tar archive handler creates, lists, and extracts TAR files. Supports gzipped tar files. Can be invoked either using its Java API, or from the command line. [Open Source, GPL]

A pure Java implementation of the zlib data compression library and the java.util.zip package. [Open Source, slightly modified GPL]