DotMSN is an open-source stand-alone class library to provide connectivity with the MSN Messenger service. The library is built in C# and can therefore be used by all languages the .NET environment supports. Because of a clean natural Object-Oriented approach the library is easy to use and implement. DotMSN is designed to be a flexible, robust and lightweight enhancement to any application. Applications of DotMSN vary from creating messaging robots to creating custom clients. If your application needs to communicate through the messenger service, DotMSN is your tool.