Many friends ask me how to transfer the iPhone contact to computer files. I always recommend them Tansee iPhone Transfer Contact.
It backup contacts on iPhone memory to a file. So you can view files on PC. However, it only exports two types of file format (Antc file, Text file).It also backup iPhone Contact’s Photos and export full screen of iPhone contact’s Photos. In addition, you can protect the file with a password to keep your privacy. But ANTC file only.
I think it is very useful and easy to use too.
I've tried its trial version, find it's pretty useful. help me deal with so many clients' contacts easily.
In http://softwarebbs.com/wiki/Tansee_iPhone_Transfer_Contact I can get a 15% discount. Save my budget. Quite a considerate website.