Standard Widget Toolkit is described as 'The Standard Widget Toolkit (SWT) is an open source widget toolkit for Java designed to provide efficient, portable access to the user-interface facilities of the operating systems on which it is implemented' and is an app in the development category. There are eight alternatives to Standard Widget Toolkit for a variety of platforms, including Windows, Linux, Mac, BSD and Android apps. The best Standard Widget Toolkit alternative is Qt, which is both free and Open Source. Other great apps like Standard Widget Toolkit are GTK, MauiKit, Uno Platform and JavaFX.