RCLayout is a Java LayoutManager that is flexible like GridBagLayout but intuitive like GridLayout. RCLayout achieves maximum results with minimum code by using a parameter hierarchy. This layout manager is easy to learn and makes designing GUIs easy.
FormLayoutBuilder is a WYSIWYG tool that enables you to easily build Java Swing layouts using the JGoodies FormLayout layout manager. Perfect for those that hate IDE form builders but need powerful layouts fast.
DialogLayout is a java layout manager. Components are positioned relative to each other using constraints that avoid nesting. Layouts scale to different sizes because the measurement system (dialog units) scales with the font. Requires jdk1.4.