The Light Weight User Interface Toolkit (LWUIT) for J2ME is developed by Sun and provides a wrapper around the default J2ME LCD UI which does lot of things in the background so that application will get consistent and rich  look and feel across all J2ME platforms.

About license

LWUIT library as such can be freely used in any commercial applications. When the source come out you will be able to change it but you will need to publish the LWUIT sources which you changed (not your application!) based on the GPL+CPE license terms.

You can download it here

http://java.sun.com/javame/technology/lwuit/

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