ʻO ka Extensible Messaging and Presence Protocol (XMPP, i kapa mua ʻia ʻo Jabber) kahi protocol kamaʻilio ākea i hoʻolālā ʻia no ka memo koke (IM), ka ʻike pili, a me ka mālama ʻana i ka papa inoa. Ma muli o ka XML (Extensible Markup Language), hiki iā ia ke hoʻololi kokoke i ka manawa maoli o ka ʻikepili i kūkulu ʻia ma waena o nā hui ʻelua a ʻoi aku paha. Hoʻolālā ʻia e hoʻonui ʻia, hāʻawi ka protocol i ka lehulehu o nā noi ma mua o ka IM kuʻuna i ke aupuni ākea o ka middleware e pili ana i ka memo, me ka hōʻailona no VoIP, wikiō, hoʻoili faila, pāʻani a me nā hoʻohana ʻē aʻe.