Apache OpenOffice for MacOS X Fully developed and supported since OpenOffice.org 3.3! Apple MacOS X requirements The current Apache OpenOffice supports Apple MacOS X version 10.7 (Lion) - 10.11 (El Capitan) and macOS 10.12 (Sierra) - 10.13 (High Sierra). Hardware requirements CPU : Intel Processor Memory : Minimum 512 Mbytes RAM Storage : At least 400 Mbytes available disk space for a default inst