Data conversion and transformation toolkit. Reads, writes and transforms CSV, Excel, JDBC, and several other formats. Site includes documentation, examples, FAQs, and download option. [Commercial]

An EDI parsing library using XML templates to define the structure of a character separated EDI file to parse EDI data to XML. [Open source, dual license: GPL or commercial]

A simple Java API for Windows .ini like configuration file handling. It also provide Java Preferences API functionality on top of .ini file. [Open source]

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]

Create several different kinds of barcodes to display in a program or export to an image. [Open Source, commercial]

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

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

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 and other format documents.

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

A Java class library for generating SPSS files (*.sav). It are completely written in pure Java. [Commercial]