FormLayout - Layout manager for Java that is similar to the Motif Form Widget (but with less features). [Open Source] - http://allocinit.com/index.php?title=FormLayout
JFCML - JFC/Swing XML Markup Language - An XML interface to the javax.swing package and its subpackages that enables programmer to create Java GUI from XML file. [Open source, Academic Free License] - http://jfcml.sourceforge.net
JGoodies Forms - A framework helps layout form-oriented Swing panels. [Free and commercial editions] - http://www.jgoodies.com/freeware/forms/
Layout Manager Launch - A collection of links to Java layout managers. - http://www.softbear.com/people/larry/javalm.htm
HtmlLayout - Layout Manager that gets the layout and resize behaviors for components from an html-like syntax. [Open Source, LPGL] - http://braindamage.org/htmllayoutdocs/
ExplicitLayout - Allows each component's size and location to be defined explicitly in terms of attributes of itself, other components or its container. [Commercial w/ Demo] - http://www.zookitec.com/explicitlayout.html