OpenOffice

OpenOffice (formerly OpenOffice.org) is an open-source word processor software developed by the Apache Software Foundation since 2002, which includes several features present in Microsoft Office and other word processor software like LibreOffice. It is based on the source code of StarOffice, which ceased development in 2010.

OpenOffice requires at least Windows XP, Mac OS X Lion or Linux with kernel version 2.6 or higher and glibc 2.6 or higher, as well as 256 MB (Linux/Windows)/512 MB (macOS) of RAM, a screen resolution of at least 1024x768 and 256 colors (8-bit) and 400 MB (macOS/Linux)/650 MB (Windows) of free disk space. Recommended are 512 MB of RAM and 16,7 million colors (32-bit) as well as a installation of the Java Runtime Environment 1.5 Update 45 or newer.

OpenOffice is known for the lack of a 64-bit version for Windows. On these systems, it must rely on the WoW64 emulation system. Also there is no version for the Apple M1 SoC, so it must rely on the Rosetta 2 emulation system on macOS Big Sur.

Former developers are Sun Microsystems and the Oracle Corporation after their aquirement of Sun in 2010. As the developers are not satisfied of the Oracle acquirement, most of them switched over to "The Document Foundation", the developers of LibreOffice. Oracle sold OpenOffice to the Apache Software Foundation in 2011. In 2020, the developers of LibreOffice, which turned 10 years at this time, wrote a letter to Apache and demanded the foundation to cease the development of OpenOffice, as it's development stucks since many years.