CRM Application (ideally based on ZOHO)

Hi All, I am looking for a CRM application. i will need features same as that of zoho crm , no problem if your application has same features as that of zoho but presented by some different way. i am not asking all the features cause i know there are some costly features like call using skype and few more. but your bid should consist of following things. 1) You must have already developed CRM application. it should be in asp . net using c#. 2) will need it with source code. 3) those who can show me a demo version would be preferred. 4) in your bid suggest what features you have out of standard CRM system and complete costing for what features you have. This is a potential inquiry for one of our clients.