Cross-Platform GUI Toolkit - Python

 Like many other GUI toolkits, it provides low-level core widgets
 like buttons, entries, scales, menus, combo-boxes, thumbwheels,
 spin-boxes, trees, notebooks and multi-column lists to name a few.
 Unlike many of those toolkits though, it also provides advanced
 composite widgets like toolbars, tooltips, progress gauges,
 split-frames, splash-screens, 2D/3D extents, color pickers,
 histograms, windows and dialogs.
 .
 More importantly, KWWidgets builds upon this set of widgets to
 interface to visualization libraries like VTK and offer high-level
 visualization-oriented widgets like surface material editors,
 simple animation generators, transfer function editors, annotation
 editors, window/level and volume property preset editors, text
 property editors, 2D and 3D rendering widgets, etc.
 .
 This package contains Python support for KWWidgets.