Hi

Scenario is like that the same kind of chat programs is incorparated into different websites. Is it possible that  the visitors in these website can view & chat with each other?

eg:

 1 website is www.sample.com/Owner/ and other is www.sample.com/Client.

Both of them have the same chat program.But these are two different applications. I want  visitors in these website to view & chat with each other. Is it possible?

The sample application is a single chat room with many users. It maintains a list of users that gets populated as users log in. The list gets shorter as a user session times out. The chat room also permits the execution of some command-line-like functions such as /admin clear which clears the chat room, and /nick [Name] which changes the current user's nickname.

Please check the following link:

http://www.codeproject.com/KB/applications/AliAspNetChat.aspx

http://www.codeproject.com/KB/ajax/UChat.aspx

http://www.codeproject.com/KB/WCF/WCFWPFChat.aspx

But i am havig two entirly different applications, hosted at different locations, with a chat programs. So how can a user i 1 application will interact with the user in other application.

 Hi,

Yes, you can. so long as they're belong to the same domain. You can build a Web Service to read and write the data of chat process into a database. Web Service can help you access the data cross the applications.