AutoMapper is my favorite .Net open source project of the year 2009. AutoMapper is a convention based object to object mapper framework developed by Jimmy Bogard . Jimmy did an awesome job for AutoMapper and I hope that more enhancements will be come on next year. In ASP.NET MVC applications, ViewModel pattern is very important design and Automapper allows to map between ViewModel objects to InputModel objets and ViewModel objects to DomainModel objects. AutoMapper is available at http://automapper.codeplex.com/ and the source code is hosted at http://code.google.com/p/automapperhome. For more details visit http://www.lostechies.com/blogs/jimmy_bogard/archive/tags/AutoMapper/default.aspx