Presence and Instant Messaging (PRIM) was an early proposal to the IETF of a standard protocol for instant messaging.

The abstract model was first published as a pair of IETF Request for Comments, <nowiki>RFC 2778</nowiki> "A Model for Presence and Instant Messaging"

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  • Presence and Instant Messaging Protocol (prim) WG - IETF Datatracker