The Free On-line Dictionary of Computing (30 December 2018):
Adaptable User Interface Oracle Toolkit(AUI, Oracle Toolkit) A toolkit from Oracle allowing applications to be written which will be portable between different windowing systems. AUI provides one call level interface along with a resource manager and editor across a range of "standard" GUIs, including Macintosh, Microsoft Windows and the X Window System. (1995-03-16)