Protocol ea Extensible Messaging and Presence Protocol (XMPP, eo qalong e neng e bitsoa Jabber) ke mokhoa o bulehileng oa puisano o etselitsoeng melaetsa ea hang-hang (IM), tlhahisoleseding ea boteng, le tlhokomelo ea lethathamo la mabitso. E ipapisitse le XML (Puo e Atolositsoeng ea Markup), e nolofalletsa phapanyetsano ea nako e haufi ea data e hlophisitsoeng lipakeng tsa mekhatlo efe kapa efe e 'meli kapa ho feta ea marang-rang. E etselitsoe hore e atolosoe, protocol e fana ka lits'ebetso tse ngata ho feta IM ea setso sebakeng se pharaletseng sa li-middleware tse shebaneng le molaetsa, ho kenyeletsoa ho saena bakeng sa VoIP, video, phetisetso ea lifaele, lipapali le lits'ebeliso tse ling.