NeoOffice is an office suite for macOS that is based on old versions of OpenOffice and LibreOffice. With NeoOffice, you can view, edit, and save older OpenOffice and LibreOffice documents.

Note: if you need to view, edit, and save newer LibreOffice or Microsoft Office documents, you may want to try LibreOffice. In most cases, the latest version of LibreOffice can open and save Microsoft Office documents far better than NeoOffice.

Instructions for building NeoOffice are in the BUILD.txt file.