Ko te Apache OpenOffice (AOO) he raupaparorohiko whai hua tari puna tuwhera. Koia tetahi o nga kaupapa whakakapi o OpenOffice.org me te kai-riiwhi mo IBM Lotus Symphony. He whanaunga tata no LibreOffice me NeoOffice. Kei roto he tukatuka kupu (Kaituhi), he ripanga (Calc), he tono whakaaturanga (Impress), he tono tuhi (Draw), he ētita tātai (Math), he tono whakahaere raraunga (Base). Ko te whakatakotoranga konae taunoa a Apache OpenOffice ko te OpenDocument Format (ODF), he paerewa ISO/IEC. Ka taea hoki e ia te panui me te tuhi i nga momo momo momo momo konae, me te aro nui ki era mai i a Microsoft Office - ahakoa, kaore i rite ki a LibreOffice, kaore e taea e ia te penapena tuhinga ki nga whakatakotoranga XML i muri mai i te 2007 Office Open XML, engari ka kawemai noa.