jvider - A GUI builder tool for JavaTM Swing applications. With jvider you can easily design graphical user interfaces for your JavaTM applets and applications.
New features in 1.3 version include:
<big>J</big>AVA<big>B</big>EANST technology employed to allow customizing the components
Compatibility with Apple Mac OS-X improved
Multiple Pastes' allowed from single Copy/Cut command
Support for JTree and JSplitPane component added
It does just what you need - easily design graphical user interface, test it and produce tidy JavaT source code. No custom libraries, no custom development environment, nothing. Just a tool to make your life easier.
Other features of jvider:
GridBagLayout is used for layout (no absolute positioning);
Interactive UI design with drag & resize features;
Testing UI on the fly without compiling;
ability to save/load your designs;
View and export produced Java source code as Frame or Applet;
Intuitive interface. Easy to understand and comprehend;
Easy to get started with tutorial and samples provided.