This application is meant to show how to create an ASP.NET MVC application from scratch. Covers some of the cool features of ASP.NET MVC3 like: - Code First - Entity Framework and LINQ - Razor view engine - Partial views and partial actions (with independent OutputCache for high concurrency page rendering) - Html Helpers - Data Annotation validation - AJAX partial rendering - Custom T4 templates for customized scaffolding You can use it as your own invoicing tool. Customization is really easy.