Bongo for Windows NT is a visual tool for designing and implementing graphical user interfaces (GUIs) for Java applications. Programmers, scripters, and graphics designers use Bongo to create modular interface building blocks called "presentations". Presentations are GUI element assemblies that encourage reuse, consistency, and the division of GUI design among the members of a development team.The Bongo builder is aimed at a broader user audience than conventional GUI builders--the multi-disciplinary teams that are increasingly required to fabricate compelling media-rich applications. Professional Java programmers will find Bongo a satisfying tool. So will scripters, people whose modest programming skills are supplemented by deep domain knowledge. Graphics designers will discover that, unlike conventional GUI builders, Bongo's flexibility and generality frees, rather than hobbles, their expressive powers. Bongo's support of nested presentations enables team-based development with each member of the team working independently on a sub-presentation.Organizations striving to present a consistent look and feel across their applications and Web pages, and to reuse their investments in content, will find Bongo an accommodating product. Presentations can be embedded in presentations without limit\; standard presentations, such as logos and billboards, as well as more complex ones such as feedback cards or registration questionaires can be easily reused throughout an enterprise.As important, Bongo is designed as a framework for integrating diverse user interface elements developed with tools built for the purpose. Any Java applet can be dropped into a Bongo presentation as easily as a button.