Instant open source instant messenger?

Question

I am looking for open source instant messaging based on .Net technologies (C # on Windows), and an open source project that has a small code base is appreciated because I only need a text messaging feature. Best authentication by remote web services.

thanks in advance George

Answer 1

The XMPP Standards Foundation is contacting several .NET SDK libraries for those who want to create their own IM.

Here is one link:
http://www.ag-software.de/agsxmpp-sdk/

CodeProject, , agsXMPP:
http://www.codeproject.com/KB/IP/JabberClient.aspx

, , !

Answer 2

#, SIP: https://sourceforge.net/projects/officesip/