Provides pure Java utilities that enhance the functionality of Java applications, including support wildcards in a path and zip, multiple threads in work queues, daily rolling logs, synchronized data types. [Commercial] - Read more

Utilities such as printf, array manipulation, console mode dialogs, file management, text, and DES crypto. [Commercial] - Read more

A Java class library for deduction rules. It provides an infrastructure for defining, managing and querying rule engine bases. [Open source, LGPL] - Read more

A Java library consisting of a number of iterators, algorithms and functions, loosely inspired by the C++ Standard Template Library. [Open source, LGPL] - Read more

A Java framework for creating online multiplayer games. [Open source, GPL] - Read more

Computes the MD5 hash of arrays of bytes. Can also be used in command-line mode. [Open Source, Public Domain] - Read more

A meta architecture for the Java virtual machine. - Read more

A user interface library for development of networked Java applications. It provides a terminal independent component model that can be adapted to different terminal types and user interface themes. [Open source, LGPL] - Read more

General purpose Java tools libraries: Lib (Objects, Strings, Files, FileFormat, Web, Tools, ZipInput); run - a Java application that runs code from a URL; jsp - Universal JSP turns JSP language into Macro; Practical XML - a very simple XML library. - Read more

Provides the following services: implementation of complete UML 1.3 physical metamodel, easy to use interfaces, event notification, undo/redo support, reflective API, XMI loading/saving. [Open Source, LGPL] - Read more

A class library providing object-oriented representations and algorithms for logic, mathematics and artificial intelligence. It comprises theorem proving, computer algebra, search and planning, as well as learning algorithms. - Read more

This package provides standardized, efficient versions of utility classes commonly encountered in concurrent Java programming. It mainly consists of implementations of a few interfaces. [Open Source, Public Domain] - Read more

Generic, extensible object-pooling library to cut down on object creation and garbage collection, thus improving performance. [Open Source, LGPL] - Read more

A cross platform audio I/O library. [Open source] - Read more

A collections framework for primitive Java types. The framework supports all primitive types and includes bridges to the standard Java Collections Framework. [Open source, LGPL] - Read more

Java utility libraries for text, IO, XML, database. Online javadocs. [Open source] - Read more

A collection of (hopefully) useful Open Source Java classes, including Syslog, JDBC Connection Pool, PAS - a lightweight application server framework, Object Pooling Framework. Also Base64 encoder/decoder, blocking queues, work queues, mutex... - Read more

An open source rule based scripting system for information integration and agents in Java, combining imperative and declarative programming. Distributed agents communicating via JMS or JADE use reaction rules in a natural syntax. - Read more

A WYSIWYG editor applet/component. Provides word processor-like features, like a spelling checker, for XHTML markup creation. - Read more

Offers libraries for the Java platform, such as dated collections, print preview, report visualization, and an OODB. [Commercial] - Read more