The .NET Framework provide a set of core Internet Services that are easily accessible to developers via a common set of APIs.

There are several versions of the Microsoft .NET Framework; MS .NET 2.x, 3.x and 4.x. Alchemy CATALYST supports all of these versions.

Visual Studio.NET

The latest version of Visual Studio - Visual Studio.NET - incorporates ASP.NET, ADO.NET, Web Services, Web Forms, and language innovations for Visual Basic. The development tools have deep XML support, an XML-based programming model and new object-oriented programming capabilities.

Visual Basic.NET

Visual Basic.NET has added language enhancements, making it a full object-oriented programming language.