Apache OpenOffice (AOO) minangka piranti lunak produktivitas kantor open-source. Iki minangka salah sawijining proyek penerus OpenOffice.org lan penerus sing ditunjuk saka IBM Lotus Symphony. Iku sepupu cedhak LibreOffice lan NeoOffice. Isine pengolah tembung (Writer), spreadsheet (Calc), aplikasi presentasi (Impress), aplikasi gambar (Draw), editor formula (Math), lan aplikasi manajemen basis data (Base). Format file standar Apache OpenOffice yaiku Format OpenDocument (ODF), standar ISO/IEC. Sampeyan uga bisa maca lan nulis macem-macem format file liyane, kanthi perhatian khusus kanggo sing saka Microsoft Office - sanajan, ora kaya LibreOffice, ora bisa nyimpen dokumen ing format XML Office Open pasca-2007 Microsoft, nanging mung ngimpor.