OpenOfficeorg

OpenOffice.org was a free, open-source office productivity suite that originated as the open-source continuation of Sun Microsystems' StarOffice. Released in the early 2000s, it was developed by a community of volunteers and contributors under the stewardship of Sun, then Oracle, and later the Apache Software Foundation. The included applications covered the core office tasks: a word processor (Writer), a spreadsheet program (Calc), a presentation tool (Impress), a drawing program (Draw), a database component (Base), and a formula editor (Math).

OpenOffice.org used the OpenDocument Format (ODF) as its native interchange format, supporting documents with the extensions .odt, .ods, .odp, and related ODF files; it also offered export to PDF and compatibility filters for Microsoft Office formats.

The suite was cross-platform, available for Windows, Linux/Unix, and macOS, and could be bundled with many Linux distributions. It was distributed under open-source licenses.

After Oracle acquired Sun, development via the OpenOffice.org project shifted toward the Apache Software Foundation, which launched Apache OpenOffice. In parallel, a separate fork, LibreOffice, was created by The Document Foundation in 2010 and became the more actively developed successor in many communities.

Today, Apache OpenOffice remains available but has seen comparatively slower development, while LibreOffice is the more widely used and actively updated option for many users. OpenOffice.org played a significant role in the early growth of open-source office software and influenced later suites, including its forks and successors.