From the publisher website or publicity

 *Single design-to-code experience inside: the included Eclipse IDE
 * IBM WebSphere® Studio Application Developer and Integration Edition IDEs
 * Microsoft® Visual Studio .NET
 * IBM Rational Rose® is included, and features integrations with the Microsoft® Visual Studio™ 6.0, Sun™ NetBeans™, and Borland® JBuilder® IDEs.
 * Model-driven development with UML support.
 * Roundtrip engineering Java, C++, Visual C++, Visual Studio and .NET languages.
 * Automatic or on demand model-code synchronization.
 * User-definable patterns and code templates.
 * Assisted modeling with language sensitive editing.
 * Multiple model support for Model-Driven Architecture.
 * Free-form diagramming.
 * Logical and physical database design.
 * Web publishing and reporting.
 * Runtime analysis including visual execution trace.

Keywords
.NET
Borland JBuilder IDE
C++
Eclipse
Eclipse IDE
IBM Rational Rose
IBM Websphere
IDE
Jbuilder
Microsoft Visual Studio .Net
Roundtrip engineering Java
Studio Application Developer
Sun NetBeans
UML
Unified Modeling Language
Visual C++
Visual Studio

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Vendor: IBM Rational