Art2link builds .NET Framework applications built on services of the common language runtime and takes advantage of the .NET Framework's class library.

ASP.NET
ASP.NET is a unified Web development model that includes the services necessary to build enterprise-class Web applications and Web Services.

Windows Communication Foundation: A Platform for SOA
It is a rich technology foundation designed for building distributed service-oriented applications for the enterprise and the web that are secure, reliable, transactional and scalable.

Windows Workflow Foundation
A programming model, engine, and tools for quickly building workflow-enabled applications on Windows.