MSN Messenger

  • MSN Messenger is an instant messaging service with its own proprietary protocol
  • The official client is produced by Microsoft, and is available from for Windows or the Mac
  • The servers are run by Microsoft. Interoperation with Yahoo IM users is promised, but is not yet available to all users
  • MSN messenger is not the same as Windows Messenger, which seems to be intended for corporate intranet deployment
  • To confuse us further, Microsoft appears to be rebranding MSN messenger as "Windows Live Messenger"
  • Unofficial clients include the multi-protocol Gaim and Kopete; and the cross-platform aMSN (Alvaro's Messenger), which is written in Tcl/Tk