Apache OpenOffice: a stable, Apache-licensed office suite you install once
What comes in the download
Apache OpenOffice is six applications sharing one installer and one look. Writer handles word processing, from a one-page letter to a book with a table of contents, indexes and tracked changes. Calc covers spreadsheets with formulas, pivot tables, charts and data ranges. Impress builds slide decks and can present them on a second screen through the Presenter Console. Draw is a vector drawing and diagramming module, Base is a database front end with forms and reports, and Math edits formulas that the other modules can embed. Documents are saved in the OpenDocument formats by default, and the suite reads and writes the Microsoft formats people actually send: .doc, .docx, .xls, .xlsx, .ppt and .pptx. Every module can also export to PDF, and the built-in Basic macro language, extension packages and template galleries are all part of the package rather than paid add-ons.
Working with it day to day
The Start Center opens on a list of recent documents instead of an empty page, and each module behaves like the word processor or spreadsheet you already know: styles and templates, spell check with installed dictionaries, autosave and recovery after a crash, mail merge from a spreadsheet, and a formula bar that accepts Excel syntax. Sharing is file-based. You save a document, attach it or place it in a shared folder, and the suite keeps a change-tracking record for whoever reviews it next. For mixed offices the practical routine is to work in OpenDocument format and export a copy in the Microsoft format when sending it outward, rather than editing the same .docx back and forth; that keeps the layout predictable. Extensions add dictionaries, extra templates, export filters and small utilities, and macros can automate repetitive work such as generating invoices from a spreadsheet.
Practical limits
The Windows build is 32-bit, which caps how much memory a very large spreadsheet or a huge document can use, and the project's release cadence is slow: updates arrive years apart rather than every few months. Compatibility with modern Microsoft files is good for ordinary documents, but advanced features, newer worksheet functions and heavily formatted layouts can shift when a file crosses between the two suites, so anything business-critical deserves a check after conversion. The interface keeps the classic menu and toolbar layout rather than a ribbon, there is no cloud service, no real-time co-editing and no mobile app, and the extension catalogue is smaller than it was a decade ago. The licence is the Apache License 2.0, which permits commercial use and redistribution without a fee, and the project publishes its releases under that licence.
Who should choose something else
If you want the newest features, 64-bit Windows builds and a faster release cycle, LibreOffice is the obvious free alternative and shares the same file formats and much of the same interface. If your workplace standardises on Microsoft 365 and you need exact fidelity, use the Microsoft applications. If your documents live in the browser and several people edit them at once, an online suite fits better. Apache OpenOffice remains a sensible choice for a home user, a school or an organisation that wants a dependable, permanently free suite with a permissive licence and no subscription pressure.
- Best for
- Home users, schools and offices that want a dependable, permanently free suite with a permissive licence
- Good to know
- The Windows build is 32-bit and releases are infrequent, so very new Microsoft Office features may not carry across unchanged.
How to get started
- Download the Windows installer from the Apache OpenOffice download page and run it; administrator rights are needed for a default install.
- On first launch, complete the short registration dialog if you want, then open the Start Center and pick a module.
- Save new documents in the OpenDocument format, and use File > Save As to write .docx or .xlsx only when you need to send a copy.
- Export finished work with File > Export as PDF, and install the language pack if you need a spell-check dictionary for another language.
- Add extensions from the built-in Extension Manager for templates, dictionaries and extra export filters.
Questions & answers
Is Apache OpenOffice free for business use?
Yes. Releases are made available under the Apache License 2.0, which allows commercial use, modification and redistribution without a fee.
Does it open Microsoft Office files?
Yes, it reads and writes .doc, .docx, .xls, .xlsx, .ppt and .pptx, though advanced formatting and the newest functions can change when a file crosses suites.
How is it different from LibreOffice?
Both use the same document formats and a similar interface, but LibreOffice ships more frequent releases and offers 64-bit Windows builds, while OpenOffice stays on the classic codebase and a slower cadence.