Optimized Java components to display columnar data on all JDKs, from 1.0.2 upwards. [commercial]

Smart JPrint, a 100% Java printing and PDF generation API for any Swing/J2EE applications; Smart JSwing, a Java swing library with custom swing components; Smart JGraph, a Java graph library for workflow, relationship, complex data presentation.

An open-source project rewriting the Java AWT classes. It is like Swing in that it doesn't use the underlying OS look and feel, but instead implements its own look and feel. [Open Source, GPL-like]

A collection of components for JFC/Swing includes calendar and calculator controls. [Commercial]

Powerful set of components for Java/SWING development that supports all Java Look and Feel includes Windows, Motif, Macintosh and adds new styles to buttons, color dialogs, search fields. [Commercial]

A set of Java GUI components including: JDataGrid, JWizardPane, JDirChooser, JLinkButton (a browser launch button), JCalendar. [Commercial, with sources]

A grid component that can be used in Swing applications. It part full featured spreadsheet editor written in Java. [Open source, LGPL]

A collection of useful Java GUI (Swing and AWT) components and utilities.

A lightweight Java component library for user interface(UI). [Open source, LGPL]

A Java Swing components library provides useful components for easier GUI development includes: JConsole, a java console replacement, redirects stdout, stderr; JSplash, a splash screen. [Open source, LGPL]