Imagero JGui is a collection of Java GUI tools and components that includes
FloatingWindow (a replacement for JToolBar),
ToolBarLayout (a multi purpose LayoutManager),
TLToolTipManager (a tooltip manager for JTree and JList),
ThreadManager (a tool to distribute tasks to a number of threads),
Dynamic Tree Framework
and many other utilities.

Changes:
This release improves the docking behavior of FloatingWindow.
It adds the following classes and components:
ImagePanel -  most advantage of ImagePanel is that it always has thin border
around it visible part.
                     This border can be made transparent.
                     It can be used for better handling such things like
region selection

JShape, JTextShape, JBorderShape - non-rectangular gui components with
transparency support

MScrollPane -  if view size is lesser then viewport size, then MScrollPane
places view in the middle of viewport.

SelectableAction, SToggleButton, SCheckBoxMenuItem, SRadioButtonMenuItem and
ActionGroup.

There were also some bugfixes.

Download jgui at http://jgui.imagero.com/download/
I added also some examples at http://jgui.imagero.com/examples/