The JOpenChart library and toolkit provides the means to create different kinds of charts, including pie charts, line charts, and plot charts. Furthermore, it contains components for embedding charts into Swing or Web applications. The library's Renderer Interface API makes it very easy to add new renderers for different chart types. Classes to interpolate measured data and to plot mathematical functions are also included.
JSpell is a server-based spell checker that allows you to spell check any HTML input field and form. It is i18n compliant and has dialogs for multiple languages available. It can be used to add spell checking capabilities to HTML forms on your Web site. This spell checker is compatible with JSP, ASP, CGI, PHP, Cold Fusion, Oracle Forms, etc.
JX is a full-featured C++ application framework and GUI widget library for use with the X Window System. It provides support for all facets of application development, including distributed applications, and aims to combine the best of MacOS and NeXTSTEP. It is built directly on top of Xlib and has been carefully optimized for performance.
Jaffa (Java Application Framework For All) is an enterprise-focused Java framework for rapid application development. It provides a complete Java Web application development stack, extending exsiting projects like Tomcat and Struts at the frontend with MVC-based web widgets, all the way through to a high-performance lightweight O/R persistence engine, with plenty of rich features in between including rules engines, declarative application, and data security. In addition to the runtime framework, there is a suite of component templates and other tools for rapid application development, including a TogetherSoft plug-in for UML intergration.
Japha is an effort to implement the major functionality of the Java library in PHP. The functionality captured in the JPI includes I/O, utility classes such as data structures, Web service architecture, and reflection classes, lang classes for implementing a standardized API, bean classes for creating a standard bean implementation, SQL classes for database persistence (via the Web service architecture), and database abstraction as well as Object-Relational mapping, networking functionality, and even some complex math.
Java Supplements is a free library of utility classes which extends and enhances the functionality of the classes provided by the normal Java API. It provides robust and reliable code for doing many of the tasks which Java developers commonly find themselves writing code for again and again, such as catching InterruptedExceptions on Thread.sleep() calls or reading files into a byte array.
Java Tiny Gfx Library (JTGL) is a graphic foundation framework (a graphics/gaming API) that will allow easy deployment/porting of applications/games on many environments: AWT, Swing, J2ME (MIDP 1&2, Nokia, and Siemens), SuperWaba (PalmOS, PPC, and Symbian), ExEn, DoJa, and others.