What Apache OpenOffice does
Apache OpenOffice 4.1.16 is Apache's office-suite release for Windows, macOS, and Linux. This record links the en-US Windows x86 installer from Apache's official mirror network; it is not a 64-bit Windows build. The publisher also provides macOS x86-64 and Linux x86/x86-64 DEB and RPM packages plus multiple languages, all selected through the official download page rather than represented by the Windows file.
Writer, Calc, Impress, Draw, Base, and Math use OpenDocument formats natively. OpenOffice can exchange older Microsoft Office formats. Writer can open DOCX but cannot save in DOCX format; importing a file does not establish that it can be returned in the same format. Complex layouts, formulas, macros, fonts, objects and animations can also change. Do not treat “opens common Office formats” as a lossless-compatibility claim; test actual business documents and retain originals.
Base database connections, Java-dependent functions, macros, and extensions introduce separate runtime, security, and compatibility requirements. Core local editing does not require an account, while downloads, extension retrieval, remote data sources, and updates can require network access.
Apache publishes SHA-256/SHA-512 files and OpenPGP signatures for release packages and documents its KEYS verification process. This review did not download the Windows installer, verify a signature locally, test Java or database functions, or compare document fidelity.