SoapBox Server 2010 Express Edition

Coversant SoapBox Server 2010 is the only XMPP solution scalable to million concurrent sessions on a single CPU, and which supports real-time interoperability with extraordinary throughput exceeding 120,000 messages per second.
License Free
File Size 23.94 MB
Version 2010 Build 731
Operating System Windows XP Windows 7 Windows 2003 Windows Server 2008 Windows Windows Vista Windows 2000
System Requirements Microsoft .NET Framework 3.5