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Renders Java 1.1 GUIs written in AWT that do not implement custom graphics to a text console. [Open Source]

A Java library including source code for the Adept Software Development System. Packages include a Java object database, advanced file I/O, caches, session management. [Open source, Artistic License]

Framework for Applets and Applications. It replaces java.applet.Applet as superclass and includes easy-to-use Internationalization support. [Commercial/Freeware]

Integrating the Java platform with Mozilla. Features include a bridge to XPCOM, a Java DOM API, the Open JVM Integration (OJI) facility, a Java WebClient API, Plug-ins implemented in Java, called 'Pluglets', and embedding the layout engine into Java applications - includes a demonstration browser partially written in Java. [Open Source, MPL]

A financial library for automated stock trading, including many technical indicators and quote retreivers to fetch both intraday and historical stock quotes from various internet sources. [Open source, GPL]

A dynamic library used to extend Java classes and implement interfaces at runtime. [Open source, Apache Software License]

An implementation of coroutines using Java 1.0 and threads - ported from a C version. [Freeware]

Provides EJB, GUI and non GUI components related to credit card data and data validation. By Keyoti Software.

Set of open source Java libraries automating or improving on existing solutions includes J2EE Scheduler, Lookup Loader, Struts Extensions. [Open source, LGPL]

Java workflow engine, Java job scheduler, and Java business process management (BPM) engine. APIs are available for Java, J2EE, XML, and Web Services. Flux can also be used without programming via its user interfaces. [Commercial]

Generic collection of Java support classes. [Open Source]

ICEbrowser (HTML component for internet browsing in Java), ICEbox (a mail component), ICEtoolkit (a GUI toolkit based on lightweight AWT components) and ICEssl (a module provides support for secure networking over the Internet, and full support for both SSL 2.0 and SSL 3.0 protocols). [Commercial, trial versions]

A business rule engine class library.

Consists of four Java components that provide streaming HTML-to-PDF conversion, streaming ZIP file generation, HTTP file uploading, and emailing.

A complete re-implementation of the java.beans packages. This project builds on the deficiencies of the Sun implementation to provide developers with a set of tools that can be used in everyday practice. The JBeans project provides more support for getting and setting bean properties, type conversion, nested properties, indexed properties, and full JavaBeans. [Open source, LGPL]

A Java class library for credit card transaction processing. [Open source, BSD License]

Task scheduling system for Java, similar to Unix cron and at daemons. Fires events at specified times. Alarms are added dynamically in any order and can be one-shot or repetitive. [Open Source, LPGL]

A Java class library for generating reports. It provides a flexible printing functionality for Java applications and supports output to Printers and PDF, Excel, HTML and XHTML, PlainText, XML and CSV files. [Open source, LGPL]

An XML-based configuration engine for Java applications. It could be used any Java application - client-side and server-side applications, Swing and web applications. [Open source, LGPL]

Java Application Framework for business development. [Freeware]

A binding for SDL (Simple DirectMedia Layer) written in java. Now you can use SDL and still program with Java. [Open source, LGPL]

Speech synthesis library. [LGPL]

A framework of components providing functionality for time related applications (for the moment instant, period, mediators managing temporal associations). [Open source, LGPL]

Multithreading collection that provides common wrappers and synchronized implementations. [Commercial w/ demo]

Report generator and print preview JavaBean.

Collection of open source reusable Java components from the Apache/Jakarta community.

Implementation of the JSR-107 JCache API. Its aim is to provide an open source alternative to commercial jcache implementations and deliver a fast distributed caching mechanism for java and j2ee. [Open source, LGPL]

Utility classes for the java collections framework. [Open source, GPL or LGPL]

Class libraries that extend JDK libraries, providing many commonly-used algorithms and data structures. By Recursion Software, Inc. [Commercial]

A general-purpose plug-in framework intended to help building scalable, extendable Java applications with low cost of maintenance. [Open source, LGPL]

This library adds a higher layer of abstraction to the standard Java print API. It has an opened architecture and simplifies the printing of complex components (e.g. tables) and reports. An interactive print preview is also included.

Java class library. The main objective is to provide a cross platform, multi-language set of utilities for use with Java applications.

Java library for real-Time, embedded and high-performance applications.

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

A pure Java library for creating and validating licenses. [Commercial]

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

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

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

Java Naming and Directory Interface (JNDI) service provider for accessing arbitrary Java objects in a hierarchical namespace. [Open source, GPL]

A pure Java library for recognition and processing mouse gestures. [Open source, LGPL]

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.

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]

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.

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]

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

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]

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

An open source rule based scripting language 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.

A job scheduling system that can be integrated with, or used along side any Java application. Quartz can be used to create simple or complex schedules for executing jobs, whose tasks are defined as standard Java components or EJBs. [Open source, Apache Software or BSD License]

A pure Java Subversion (SVN) client library that provides high level of control over subversion repository operations. [Open source, BSD-like]

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

A library to dynamically create proxy classes and instances. Features an introduction to the library, download links and some documentation. [Open source, BSD License]

An advanced printing/report generation package for Java applications and applets. The core of Style Report/Pro is a Java class/Java bean library with a powerful API. It support PDF/RTF/HTML generation, charting, grouping/summarization and high performance, high resolution printing drivers. [Commercial]

Set of Java, COM and JavaScript libraries which together can provide connectivity between all kinds of applications. [Open Source, GPL]

Collection of useful Java classes, including an XML generator and a simple editor. [Open Source, GPL]

Collection classes that complement and extend java.util .

A meta architecture for the Java virtual machine.

A Java API that facilitates development and support of multi-threaded applications.

Allows to access everything (files, streams, arrays) in same manner, and gives a clear difference between read only and read/write access, control over byte order, optimized reading over http. [Open Source, BSD]

An extendable implementation of the NetBeans Filesystems API providing transparent access to local, JAR, CVS, XML and FTP filesystems. [Open Source, MPL-like]

JLicense is a Java utility library for creating and validating license keys. AuthToken is Java utility library for generating and validating authentication tokens (i.e., an encrypt string). [Freeware, pay for sources]

Provides a powerful collection of index-structures, query operators and algorithms facilitating the performance evaluation of new query processing developments. [Open Source, LGPL]

A licensing framework that can be embedded into custom Java applications or components only allowing the permitted use according to the supplied license. [Commercial]

Java-based object oriented platform for MUDs and other modular, possibly distributed applications. [Open Source]

A collection of easy to use multi-purpose Javabeans providing commonly used methods for handling I/O, arithmetic, and general commonly used algorithms used in computer science. [Open source, BSD License]