Includes jDiskReport, a free cross-platform graphical disks report utility. [Freeware]

Translates words and phrases from one language to another. Includes pluggable dictionaries and lexicons. [LGPL]

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, or from a GUI version. [Open Source, GPL]

A powerful Java Console Client written 100% in java. Mainly written for System Administrators, Coders and also written with the intention to be plugged into various other applications.

Allows merging, stamping, appending, form filling and page placing, rotating, scaling and adding new content to existing PDF documents. By ceTe Software. [Shareware]

A checksum utility entirely written in Java (JAva ChecKSUM). It supports most common checksum algorithms (Adler32, BSD sum, POSIX cksum, CRC-16, CRC-32, MD2, MD5, SHA and Unix System V sum). [Open source, GPL]

A command-line utility for reporting the differences between ASCII or binary files, or recursively finding the differences between two directories. [Freeware]

A scheduler written in Java. Reads and stores the tasks to execute in a file, a data base or an EJB and provides a web basic UI. [Open source, LGPL]

Small utilities and libraries such as: cascading proxy server, photo album applet, .class file editor, WAN simulator, and auto-adjusting JLabel. [Open Source, GPL]

Free java utilities with source code. Includes powerful ClassEditor that lets you manipilate compiled java binaries. [Open Source, GPL]