nib4j for Mac

From ByteConsult:

nib4j is a simple but powerfull Java library that permits the use of Apple's Interface Builder to design Swing-based user interfaces. It creates Swing menus, frames and dialogs from Carbon nib files and provides a complete separation of UI and application code. The new version supports the creation of cross-platform UIs with use of JGoodies Forms. With the nib4j Viewer you can try out your Swing interfaces without writing any code and do a cross-platform test showing different Look & Feels.