I-Extensible Messaging and Presence Protocol (i-XMPP, eyaqanjwa ngokuthi i-Jabber) iyiphrothokholi yokuxhumana evulekile eyenzelwe umlayezo osheshayo (IM), ulwazi lobukhona, nokugcinwa kohlu loxhumana nabo. Ngokusekelwe ku-XML (Ulimi Lwemakhaphu Enwetshiwe), inika amandla ukushintshaniswa kwesikhathi sangempela kwedatha ehleliwe phakathi kwanoma yiziphi izinhlangano zenethiwekhi ezimbili noma ngaphezulu. Idizayinelwe ukuthi inwetshwe, iphrothokholi inikeza inqwaba yezinhlelo zokusebenza ezingaphezu kwe-IM yendabuko endaweni ebanzi ye-middleware egxile emlayezo, okuhlanganisa nokusayina i-VoIP, ividiyo, ukudluliswa kwamafayela, amageyimu nokunye ukusetshenziswa.