The Apache OpenOffice project (AOO) provides a full featured office productivity suite based on open standards.
It is the continuation of the OpenOffice.org project.

For detailed information about Apache OpenOffice please visit the Project Website.

Apache OpenOffice is a very large project with many components and mainly implemented in C++ but also in Java, Perl, Python and other languages.

Currently supported platforms include:

• Microsoft Windows
• macOS (OS X)
• Linux variants
• FreeBSD
• OS/2

OpenOffice is used by millions of users worldwide and with more than 280 million downloads it is one of the most successful open source projects.

You can always checkout the latest source via Git using the following command:

git clone https://gitbox.apache.org/repos/asf/openoffice.git aoo

For further information visit https://openoffice.apache.org/source.html.

Apache OpenOffice is a big project and depends on several other external libraries.
The list of prerequisites varies for the different platforms.

A comprehensive and complete building guide can be found in the Project Wiki.

With having all prerequisites in place you can simply run

cd aoo/main
autoconf
./configure <configure_switches>
./bootstrap
source *.set.sh
cd instsetoo_native
build --all

Note that building OpenOffice can take several hours.

The default build will produce a setup version (e.g. setup program on Windows, dmg on macOS, rpm and deb packages on Linux) and an archived version.
The output can be found in the directory in instsetoo_native/<output_dir>/Apache_OpenOffice/...