01 Documents
Edit Word documents directly
Page view, rulers, ribbon and styles. With headers and footers, a table of contents, footnotes, comments, track changes and comparing two versions.
Read moreOffice suite
Open Office Studio
All your office work on your own computer
Documents, spreadsheets, presentations, notes, email and databases in one program. It opens and saves Word, Excel and PowerPoint files directly, without an account or cloud service.
- DOCX · XLSX · PPTX · MDB
- Windows · macOS · Linux
- No account · no telemetry
- 8 interface languages
- Free · Apache-2.0
In development: these are development releases, not yet signed off for production work. Test with copies of your files.
Features
Six apps in one suite
Start with the highlights or pick a topic.
02 Spreadsheet
Excel files with formulas and charts
Formulas, cell formatting, sorting and fill, with eleven chart types. Input like 1,5, € 1.234,50 or 26-10-2026 is recognised as a number or date.
Read more03 Presentation
Create and present PowerPoint files
Slides, shapes, text and speaker notes, and a slideshow from the first or current slide.
Read more04 Notes
Notebooks that stay local
Notebooks, sections and pages, saved locally and automatically, with backups. Each section is a free canvas or a Markdown page with preview, tables and task lists.
Read more05 Database
Open Access databases without Access
Opens MDB and ACCDB and builds an editable SQLite working copy; the original stays untouched. With tables, queries, simple forms and reports, and a compatibility report per file.
Read more06 Email
Your email, with no party in between
An IMAP and SMTP client with folders, search and attachments. Office attachments open as an editable copy, and any open document can be sent as an attachment. External images stay blocked until you allow them.
Read moreFormatting and styles
Style editor, lists, borders, tables, images, sections and columns.
Reviewing together
Comments, track changes and comparing two versions.
CSV and TSV
Import and export, with freeze panes, AutoSum and find and replace.
Eleven chart types
Insert and edit in documents, spreadsheets and presentations.
Markdown
Source editor with live preview, tables and task lists, plus import and export.
Sign in with Microsoft and Google
Through OAuth2, with your own client ID. Server settings are suggested when you add an account.
VBA in a sandbox
Runs only after your permission, without COM, Windows APIs or file access. Nothing starts by itself.
Export a database
Save as SQLite, tables and queries as CSV, and source as SQL or BAS.
Document tabs
Everything in one window; drag a tab out into its own window.
About fifteen formats per module
The app itself writes DOCX, XLSX, PPTX, Markdown, HTML and PDF, among others. With LibreOffice also OpenDocument and older Office formats.
Spell checking
Dutch and English with Hunspell dictionaries, suggestions and autocorrect.
Crash recovery
Automatic recovery, recent files, print preview and light and dark themes.
Download
Download v2026.44.8
Free and without an account. Signed installers for Windows, macOS and Linux.
Open Office Studio is a desktop app. Download it on your computer.
Other platforms
Separate apps
Only need one part? Every app has its own installation and its own profile.
Open Writer Studio
Open Spreadsheet Studio
Open Presentation Studio
Open Email Studio
Open Notition Studio
Open Database Studio
Everything runs on your own computer. Open Office Studio collects no usage data.
New in v2026.44
The whole suite or just what you need
Next to the full suite there are now six separate apps, each with its own program name and local profile.
Seven installation choices
The suite, or documents, spreadsheet, presentation, email, notes or database separately.
Signed installers
Authenticode on Windows, notarized by Apple on macOS, OpenPGP on Linux.
Double-click opens your file
The installers register 30 extensions for Office, OpenDocument, RTF and Access.
Tested in the release build
Over 1,500 frontend tests on each of the three platforms.
Frequently asked questions
Is it ready for daily work?
Not quite yet. The releases are development releases and not yet signed off for production work. Test with copies of your files and see the known limitations in the release audit on GitHub.
Which files can I open?
DOCX, XLSX and PPTX directly, CSV and TSV, Markdown, and MDB and ACCDB as an editable copy. For OpenDocument and older Office formats, install LibreOffice as well.
What does it cost?
Nothing. Open Office Studio is open source under the Apache-2.0 licence: no licence fees and no account.
Where are my files?
On your own computer. There is no telemetry. Network connections are only for what you set up, such as your mail server. Passwords are kept in your operating system’s keychain.
Do I have to install the whole suite?
No. Documents, spreadsheet, presentation, email, notes and database also come as separate apps. The suite and a separate app each have their own profile; transfer notes with a backup.
Do I need Microsoft Access?
No. Open Database Studio reads MDB and ACCDB itself and works in a SQLite copy; the original file is never written to. Access form designs and macros are inventoried, not executed.
Technology
For those who want to know how it is built.
Tauri 2 and Rust
The desktop shell: files, conversion, email, windows and recovery.
React 19 and TypeScript
The interface with ribbon, editors, charts and printing.
Open document engines
The @betteroffice packages (Apache-2.0) for documents, spreadsheets and presentations.
SQLite and its own VBA interpreter
For Access databases, with a DAO subset.
Hunspell
Spell checking as WebAssembly, with dictionaries from pinned sources.
OpenAEC house style
The same controls and look as the other OpenAEC apps.