Applications developed by CodingTheWorld
eInvoicing system
Hard to set an image for that because it's a service level application allowing a backoffice system to generate and send eInvoices to several 3rd party systems such as the dutch government (digipoort), cXML, statement, (merged) pdf invoices by email etc. This system has being developed in C# using the .NET 4 framework in combination with the communication foundation.