SDE for NetBeans is a UML modeling environment tightly integrated with NetBeans. It lets you draw all types of UML diagrams (use case diagram, class diagram, sequence diagram, activity diagram, etc.) in NetBeans, reverse source code (Java, C++, XML, XML Schema, CORBA IDL, etc.) to UML models, and generate Java source from UML diagrams. It features a Rational Rose importer, an XMI importer, HTML/PDF documentation generators, and plug-in and template support.
The Pandora Engine SDK is an object-oriented development toolkit that is specially designed for multi-platform use. It allows you to create truly object-oriented programs without being restricted to object-oriented languages like C++. The environment is fully self-contained, which allows for easier porting, and the inclusion of a commercially developed VESA graphics drivers means that you can create full-screen applications that don't require X11. It is intended for creating both applications and games, and is also required to write programs for Athene, a multi-platform operating system that is based on the engine.