Easy to use marketing tools (App for sale with source code )

HI! I Will buy any simple and easy to use marketing software developed in c#. I want only finished products with the full source code. If you have an application that you already developed and are ready to sale the source code, please bid. I will need Screenshots and a demo if possible. That will help me make my mind quickly. I may choose one or many bidders for that request. Please bid only if you get a useful tool that I can sale and I need something that is stable .No vb.net project unless it's something that need attention... Regards, Thank.