libmiglayout-java | The Java Layout Manager | Mehr ...
MiGLayout is a superbly versatile SWT/Swing layout manager that makes layout problems trivial. It is using String or API type-checked constraints to format the layout. MiGLayout can produce flowing, grid based, absolute (with links), grouped and docking layouts. MiGLayout is created to be to manually coded layouts what Matisse/GroupLayout is to IDE supported visual layouts.