SDE for Visual Studio .Net is a UML CASE tool totally integrated with Microsoft Visual Studio. It supports full software development lifecycle - analysis, design, implementation, testing and maintenance. It combines the power of UML modeling facilities and Microsoft Visual Studio .Net. It helps you build quality applications faster, better and cheaper. You can draw UML diagrams in Visual Studio .Net, generate code (J#, C#, C++ and Visual Basic), and reverse engineering code to class diagrams.

More:
+Latest UML notation (use case diagram, sequence diagram, collaboration diagram, class diagram, state diagram, activity diagram, component diagram, deployment diagram and object diagram)
+Use case modeling (use case description, flow of events, scheduling and etc.)
+Textual analysis for finding candidate classes, use cases, actors, flow of event and etc.
+Business workflow diagram
+CRC card for finding objects
+Reverse engineering - code to model, code to diagram
+Code Generator - generate code, model to code, diagram to code (J#, C#, C++ and Visual Basic - VB)
+Incremental round-trip engineering
+Automatic synchronization between source code and diagrams
+Template support (e.g. for generating XML, Javascript and SQL)
+Model validation
+Automatic diagram layout (e.g. rearrange classes in class diagrams automatically)
+Import Rational Rose project
+Import XMI/export XMI
+Export diagrams to image in PNG, JPG, SVG formats
+OLE support - draw UML diagrams in Microsoft Word, PowerPoint and Excel directly
+Generate report and documentation in HTML and PDF formats
+Version control
+Multilingual support
+Printing facilities
Other SDEs:
-SDE for Microsoft Visual Studio .Net
-SDE for Eclipse
-SDE for WebSphere Studio Application Developer (WSAD)
-SDE for JBuilder
-SDE for IntelliJ IDEA
-SDE for NetBeans
-SDE for Sun ONE