Instant Messaging Information Site
Instant messaging has been a hot technology for years, with standardization
activities ongoing now for nearly a decade. But, the fruit of that labor
is starting to pay off as the world begins to converge on interoperable
instant messaging standards. The two popular standards that have
emerged are XMPP and SIMPLE, with XMPP clearly
well in front of SIMPLE in terms of deployment and breadth of client
and server support.
Instant Messaging Standards
XMPP-related Standards
XMPP-related Papers
- XMPP 101 (03/2009)

SIP-related Standards
- RFC 3428 - SIP Extension for Instant Messaging
- RFC 4479 - A Data Model for Presence
- RFC 3763 - Presence Information Data Format (PIDF)
- RFC 4480 - Rich Presence Extensions to PDIF
- RFC 4481 - Timed Presence Extensions to PDIF
- RFC 4482 - Contact Information for the Presence Information Data Format
- RFC 4489 - Location Types Registry
- RFC 4975 - Message Session Relay Protocol (MSRP)
- RFC 4976 - Relay Extensions for the Message Sessions Relay Protocol (MSRP)
Instant Messaging Links
- Instant Messaging (IM) Clients:
- Cisco Personal Communicator
(XMPP, SIP) (XMPP in 8.0 )
- Trillian
(XMPP, MSN, Yahoo, AOL, IRC, Facebook, Twitter)
- Psi
(XMPP)
- Miranda IM
(XMPP)
- Digsby
(AOL, MSN, XMPP, Yahoo, ICQ, Facebook)
- Spark
(XMPP)
- Exodus
(XMPP)
- Google Talk
(XMPP)
- MSN Messenger
(Proprietary)
- AOL Instant Messenger
(Proprietary)
- Yahoo Messenger
(Proprietary)
- WebEx Connect
(XMPP)
- Instant Messaging Servers:
- Hosted XMPP IM Services:
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