Apache OpenOffice is a free office-suite alternative to Microsoft Office or Apple's iWork Suite. With open-source development, features constantly change and improve, which makes OpenOffice in. The new OpenOffice.org 3.0 runs only on Intel-based Macs; systems powered by the older PowerPC processors can download and run an older 2.x edition that requires X11. Jul 01, 2019 The most popular version..