OnlyOffice is a modern, free office suite designed as a powerful alternative to Microsoft Office. It provides a familiar ribbon-style interface and 100% compatibility with Word, Excel, and PowerPoint formats, making it one of the best free options for creating and editing documents, spreadsheets, and presentations.
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Can I open and save Microsoft Word documents properly?
Yes, OnlyOffice supports DOC and DOCX formats with excellent compatibility. Users often report that it handles complex Office documents (especially OOXML) more accurately than alternatives like LibreOffice.
Is OnlyOffice actually free to use?
OnlyOffice offers both free and paid options. The desktop editors are free for personal and offline use, while the full collaboration features (like online document editing with multiple users) usually require a server setup or a paid plan depending on scale and business use.
How do collaboration features work in the free cloud version?
In the free cloud offering, users can create "rooms" to share documents, invite collaborators, and edit in real time. These rooms feature options for permissions and collaboration without requiring integration with other services.
How does OnlyOffice compare to LibreOffice or Microsoft Office?
Many users find OnlyOffice closer in look and feel to Microsoft Office, especially with its ribbon-style interface and better compatibility with DOCX and XLSX files. LibreOffice is often preferred for open-source purists, but OnlyOffice tends to win for modern UI and smoother formatting consistency.
Is OnlyOffice safe and privacy-friendly?
OnlyOffice is often chosen by people who want more control over their data. Self-hosting is a major advantage for privacy-conscious users since documents can stay on your own server rather than being stored in third-party cloud ecosystems
Features
Individual and group rights
Share your documents with an individual or whole team and set different permission levels. Public sharing is also available.
Different co-editing modes
Co-author documents with one of two co-editing modes: (1) Fast: display all changes right after input, or (2) Strict: see co-authors' changes only when they save them.
Tracking changes
Get more control over your documents with Review mode Track your collaborators' changes and reject or accept them when needed.
Version History
Track all changes to your document. Check who made changes and when. Recover previous versions if necessary.
Document comparison
Easily compare two documents to see the differences with revision marks. Accept or reject changes one by one or all at once. Merge the changes and save them as a new version of the original document.
Efficient communication
Tag co-authors and leave comments for them. Communicate in real-time using the built-in chat.
Other Features:
- Use various styling and formatting tools
- Insert and manipulate different objects
- Do even more with a collection of integrated plugins
Community Server is a free open source collaborative system developed to manage documents, projects, customer relationship and email correspondence, all in one place.
What's New
OnlyOffice Docs 9.3 released: Enhanced PDF Editor, more signature options, Multipage View, Solver in sheets, and more.
Extended signature options for PDF forms
Signing documents digitally should feel as natural as using pen and paper. With the updated signature field in PDF forms, you can offer recipients a seamless and flexible experience. In addition to the available image upload, which now includes the option to remove white backgrounds, users have access to expanded signing options designed for maximum convenience:
- Custom text: Typing a signature using an elegant, professional font. Perfect when users don't have a stylus or image file handy.
- Drawing: Drawing a signature directly on the screen using a mouse or touch device for a personal touch.
ONLYOFFICE Docs Enterprise users can now upload a signing certificate to the Admin Panel. This feature enables trusted digital signatures on submitted PDF forms, ensuring that important documents are protected from unauthorized access and modifications.
Where to find: Admin Panel ➙ Settings ➙ PDF Digital Signature
Master your PDFs with new editing tools
Working with PDFs is a daily reality for many professionals. In this release, we've focused heavily on making PDF management more flexible and secure.
Editing password-protected files. Unlock and edit protected PDFs directly if you have the password.
Where to find: Editing mode ➙ Unprotect document
Managing links. Easily create and edit links to external resources or internal pages. These links remain active even in the Commenting mode.
Where to find: Editing mode ➙ Insert tab
Moreover, you will find the following enhancements for the PDF Editor in version 9.3:
- support for Version History for PDF files;
- support for editing built-in PDF fonts;
- ability to redact text from the pop-up tool panel;
- page print settings for PDFs;
- support for macros in PDFs (adding/deleting/editing pages, forms, annotations, shapes, tables, images, and diagrams);
- inserting adjustable fields into a table cell when creating PDF forms.
Document editor: better collaboration and layouts
Writing and editing documents just got smoother with highly requested features that improve both individual focus and team collaboration.
Multipage view. Review layouts more effectively by viewing multiple pages side-by-side.
Where to find: View tab ➙ Multiple Pages
Enhanced comments. Collaboration is clearer than ever. Comments now feature unique user colors for instant identification, with the exact start and end points of the commented text being displayed, so context is never lost.
Where to find: Comments
Header & Footer tab. All header and footer options are now consolidated in one dedicated tab for easy access.
Where to find: Header & Footer tab
Enhanced mouse select. You can now select multiple words or entire paragraphs simply by double- or triple-clicking, making text selection faster and more precise.
Where to find: Double & triple mouse clicking
Spreadsheet editor: Speed and precision
For data analysts and spreadsheet power users, performance is key. We've optimized the ONLYOFFICE Spreadsheet Editor to handle data more quickly and accurately.
First of all, speed improvements are immediately noticeable. The initial rendering of large spreadsheets – specifically those over 3 megabytes – has been accelerated, resulting in less waiting and more productivity when opening large files.
New Solver tool. Solve linear problems using the Simplex method directly within your sheets.
Where to find: Data tab ➙ Solver
Expanded formula library. We've added new functions for regular expressions – REGEXTEST, REGEXREPLACE, and REGEXEXTRACT – improving how you handle complex text data.
Where to find: Formula tab
Dynamic array support. The introduced option allows formulas to return multiple results that automatically "spill" into neighboring cells. This supports modern spreadsheet practices.
Changelog
All Editors
- Added the Use AI functions option to the application settings
- Added Box and Dropbox cloud providers
- Added the Pin option to the Recent files and Recent folders lists on the start page
- Added the ability to work with files in separate windows (macOS)
- Added the Open File option to the application settings to open a file in a separate window (macOS)
- Implemented the ability to add hyperlinks to images, shapes, or groups
- Implemented all settings for texture fills for images
- Updated macro recording in documents, spreadsheets, and presentations
Document Editor
- Added Multiple pages view
- Added the Zoom to 100% and Multiple pages buttons to the View tab
- Changed the appearance of comments. Now a user's color is used and the beginning and end of the comment are displayed
- Implemented the ability to select words/paragraphs by double/triple-clicking the mouse
- Added saving to the MD format
- Moved header and footer settings to a separate Header & Footer tab
Spreadsheet Editor
- Added support for new functions: REGEXTEST, REGEXREPLACE, REGEXEXTRACT
- Improved work of the COUNTIF function
- Added support for dynamic arrays
- Added Solver for solving linear problems (Simplex LP)
- Changed the color of the resolved comment indicator
- Added the ability to select multiple separators when splitting text into columns/pasting from the clipboard
- Added the Format button, which combines various functions for working with sheets/rows/columns
- Added support for TSV files for reading
- Added options for pasting from the clipboard for the Paste button on the top toolbar
Presentation Editor
- Added support for GIF animations playback in the slideshow demonstration mode
Forms
- Added the signature settings window with the ability to draw and add text to signatures
- Added the ability to stretch fixed forms to fit the table cell size using the context menu
- Added the Protection tab, which duplicates the Protect functionality in the File menu
- Added saving to the MD format
PDF Editor
- Added version history
- Added Multiple pages view
- Added the Zoom to 100% and Multiple pages buttons to the View tab
- Implemented a password prompt when enabling the Edit PDF mode if the file is protected from editing
- Added support for Link annotations with the ability to add them both to an area and to text on a page
- Added the ability to continue editing PDF using embedded fonts
- Added the ability to redact text using the auxiliary pop-up toolbar
- Added parameters for printing pages
Diagram
- Added print preview
Fixes
Security
- Fixed several vulnerabilities with out-of-bounds read in XLS processing/conversion (via FilePass, HLink, rgXTI.itabLast, Formula record cce, ShapePropsStream, and CRN.colLast records/fields) leading to information leak and ASLR bypass
- Fixed vulnerabilities with untrusted pointer dereference in XLS processing/conversion (via pictFmla.cbBufInCtlStm and other vectors) leading to information leak and ASLR bypass
- Fixed a DOM-based XSS vulnerability when executing a macro using dynamic import() (CVE-2021-43446, CVE-2023-50883, CVE-2024-44085)
- Fixed the vulnerability in the update service, that allows you to perform actions with files with system privileges
