OnlyOffice Review Review
Rated 4.4/5 on G2 — Open-source office suite with docs, spreadsheets, slides and real-time collaboration
OnlyOffice Review
Rated 4.4/5 on G2 — Open-source office suite with docs, spreadsheets, slides and real-time collaboration
OnlyOffice Overview
OnlyOffice is an open-source office suite developed by Ascensio System and distributed under the AGPL 3.0 license. It is widely regarded as the best Microsoft Office–compatible alternative on the market because it natively supports the .docx, .xlsx, and .pptx formats with very high formatting fidelity. The product family includes ONLYOFFICE Docs (the core editors), ONLYOFFICE DocSpace (collaborative document rooms), ONLYOFFICE Workspace (full collaboration platform with mail, CRM, projects, and calendar), and free desktop and mobile apps for Windows, macOS, Linux, iOS, and Android.
Real-time collaboration with Fast and Strict modes, AI-powered writing tools, fillable forms, e-book editing, PDF tools, and built-in audio and video calls inside the editor make OnlyOffice a serious productivity option for teams that need full Office compatibility without paying Microsoft 365 prices. Pricing ranges from a free Startup tier on DocSpace cloud through $20/admin/month Business plans up to $6,550 lifetime self-hosted licences for enterprises that need full data control.
OnlyOffice Features — What You Get?
OnlyOffice gives you a full Office-class productivity suite: Document Editor (Word-compatible), Spreadsheet Editor (Excel-compatible), Presentation Editor (PowerPoint-compatible), PDF Editor, Form Editor (DOCXF / OFORM), e-book editor, real-time co-editing with Fast and Strict modes, comments, track changes, version history, in-document chat, audio and video calls, AI assistant for text/image/code generation, plus tools for translation, summarisation, and rewriting. Higher tiers and Workspace add a full collaboration platform with mail, CRM, projects, calendar, and document management. Self-hosted versions give you complete data control with on-premises deployment.
Top OnlyOffice Services
DocSpace Free — 3 admins, 12 rooms, 2GB
DocSpace Business — $30/admin/month, 250GB/admin
Docs Enterprise Cloud — $8/user/month
Workspace — $2,200-$4,450/server (50 users)
On-premise DocSpace — $6,550/server, Free for nonprofits
PDF & Form Editor (DOCXF / OFORM)
AI Assistant (Generate, Translate, Rewrite, Summarize)
Self-Hosted Enterprise & Community Editions
OnlyOffice offers DocSpace (collaborative document rooms) and Workspace (full office suite). DocSpace has a free tier for 3 admins (unlimited users, 12 rooms, 2GB storage) and Business at $30/admin/month (250GB/admin). Docs Enterprise Cloud is $8/user/month. On-premise: DocSpace $6,550/server, Docs Enterprise $1,500. Workspace pricing $2,200-$4,450/server for 50 users with 30-day free trial. Free for nonprofits and schools.
OnlyOffice Price Plans
OnlyOffice has a complex pricing model because it spans free desktop apps, cloud SaaS, collaborative DocSpace, full Workspace, and self-hosted enterprise editions. Below are the typical 2026 public prices for the most-asked-about tiers.
Free Desktop & Mobile Editors — $0
Native desktop apps for Windows, macOS, and Linux, plus mobile apps for iOS and Android. Full document, spreadsheet, presentation, and PDF editing — completely free for personal use, forever.
ONLYOFFICE DocSpace Cloud — Free Startup or $20/admin/month Business
Free Startup tier with unlimited users and guests for small teams. Business tier charges only for admins at $20/admin/month — a unique pricing model where collaborators are free.
ONLYOFFICE Docs Cloud (Business) — $8/user/month
Cloud-hosted collaborative document editing with real-time co-editing, version history, and integration with most major file storage platforms.
ONLYOFFICE Workspace Cloud — From $5/user/month
Full collaboration suite with editors, mail, CRM, projects, calendar, and document management. Note: Workspace Cloud is being phased out in favour of self-hosted and DocSpace.
ONLYOFFICE Docs Self-Hosted — From $1,500 (50 connections, lifetime)
Commercial self-hosted licence with one year of updates and support. Scales by number of concurrent connections; perpetual licence so you own the software.
ONLYOFFICE DocSpace Self-Hosted — From $6,550 lifetime
Self-hosted DocSpace with one year of support and updates included. Best for enterprises that need full data control and on-premises deployment.
Pros and Cons of OnlyOffice
Pros
- Best Microsoft Office .docx / .xlsx / .pptx compatibility of any open-source suite
- Open source under AGPL 3.0 with full source on GitHub
- Free desktop and mobile editors with no time limit
- Real-time collaboration with Fast and Strict modes
- Built-in audio and video calls inside the editor
- AI assistant for generation, translation, rewriting, and summarisation
- Self-hosted options give complete data control
- Strong integrations with Nextcloud, ownCloud, Confluence, Moodle, WordPress
Cons
- Performance can degrade on very large documents
- Customer support response times can be slow
- Workspace Cloud is being deprecated in favour of self-hosted
- Pricing across SKUs (Docs / DocSpace / Workspace) is confusing at first
- Self-hosted DocSpace lifetime cost is significant for small teams
OnlyOffice rates around 4.5/5 on G2 and 4.5/5 on Software Advice, with users consistently praising Microsoft Office compatibility, the open-source model, and the value of the free desktop apps. Critical reviews most often focus on customer support quality and the complexity of choosing between Docs, DocSpace, and Workspace SKUs. For teams looking for a serious Microsoft 365 alternative — especially with self-hosted requirements — OnlyOffice remains one of the most-recommended options in 2026.
What real users say
Verified User on G2 • October 24, 2025
OnlyOffice is the only free Microsoft Office alternative I have used that opens complex .docx and .xlsx files without breaking the layout. We deployed the self-hosted Community edition for a 35-person team and the integration with Nextcloud has been flawless. AI assistant additions in 2025 are a real bonus for the price.
Source: paraphrased from public G2 review — https://www.g2.com/products/onlyoffice-workspace/reviews
Verified User on Software Advice • September 16, 2025
For our small consultancy OnlyOffice DocSpace has replaced Google Workspace at a fraction of the cost — Business plan only charges for admins, which is unique and incredibly cost-effective. Real-time co-editing is genuinely smooth and the built-in audio calls inside the editor are a clever touch.
Source: paraphrased from public Software Advice review — https://www.softwareadvice.com/cms/onlyoffice-docs-profile/
Verified User on G2 • November 09, 2025
Switched our 200-person company from Microsoft 365 to OnlyOffice self-hosted. Compatibility with existing .docx and .xlsx files is the best I have seen in any non-Microsoft suite. Customer support has been a little slow on a couple of tickets but the product itself has been rock solid for nine months running.
Source: paraphrased from public G2 review — https://www.g2.com/products/onlyoffice-workspace/reviews
Top OnlyOffice Alternatives
If OnlyOffice is not the right fit, the strongest 2026 office suite alternatives are:
Microsoft 365
— Industry standard with Word, Excel, PowerPoint, Outlook, and Teams.
Google Workspace
— Best-in-class real-time collaboration in Docs, Sheets, Slides.
LibreOffice
— Long-running free desktop office suite, weaker on real-time collaboration.
WPS Office
— Lightweight, free, strong Microsoft compatibility.
Zoho Workplace
— Affordable cloud office and collaboration suite.
OnlyOffice Frequently Asked Questions
Quick answers to the most common questions buyers ask before adopting OnlyOffice in 2026.
Is OnlyOffice really free?+
Yes — the desktop and mobile editors are free for personal use forever, with full Word, Excel, PowerPoint, and PDF editing. The Community Edition of self-hosted Docs is free under AGPL 3.0. Paid tiers (Cloud Business, DocSpace Business, self-hosted Enterprise) unlock collaboration, hosting, support, and additional features.
How well does OnlyOffice handle Microsoft Office files?+
Better than any other open-source alternative. OnlyOffice natively supports .docx, .xlsx, and .pptx formats with very high formatting fidelity — most documents survive a round-trip with no layout damage. This is the main reason teams migrate from LibreOffice to OnlyOffice.
What is the difference between OnlyOffice Docs and DocSpace?+
OnlyOffice Docs is the underlying editor suite — you embed it in your own document storage (Nextcloud, ownCloud, your custom app). DocSpace is a complete collaborative workspace built on top of Docs, with rooms, guests, sharing, and team collaboration features ready to use out of the box.
Can I self-host OnlyOffice?+
Yes. The Community Edition is free under AGPL 3.0 and can be self-hosted on your own server (Docker / Linux). Commercial Enterprise editions of Docs and DocSpace add support, updates, and additional features. Self-hosting gives you complete data control and is preferred by many EU and government deployments.
Does OnlyOffice include AI tools?+
Yes. The AI assistant (introduced in 2024 and expanded in 2025) generates text, images, and code; performs grammar and spelling checks; rewrites paragraphs in different tones; translates between languages; and summarises long documents. Configurable across both cloud and self-hosted deployments.
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