Highest Microsoft Office compatibility
Work with DOCX, XLSX, and PPTX files without formatting breaks or conversion issues.
ONLYOFFICE Docs
ONLYOFFICE Docs, the secure, self-hosted alternative to Zoho Writer
Edit, share, and collaborate on documents, spreadsheets, and presentations, with open-source code and full control over where your data lives.
Why teams are moving away from Zoho
For businesses, governments, and developers who need to keep data on infrastructure they control, those trade-offs matter.
No self-hosting or on-premise option - your files live on Zoho's infrastructure only- Formatting can shift when round-tripping complex DOCX/XLSX/PPTX files
- No advanced, standalone PDF editor
- Closed-source platform: you can't inspect or audit the code
- Zoho uses Zia, its own AI model; connecting your own AI provider isn't available directly inside Writer, Sheet, or Show
What you get with ONLYOFFICE
Real collaboration without compromise
Real-time and paragraph-locking co-editing. Comments, track changes, and version history. Role-based access control. Secure document sharing.
A real PDF editor, not just a viewer
Go beyond basic tools with a full-featured PDF editing environment.
Full control of your data
Host ONLYOFFICE on your own server or private cloud. Your documents stay where you decide.
Flexible licensing
Choose a subscription or a perpetual on-premise license.
Work with your tools
50+ ready-made connectors, so you're not locked into a single company's ecosystem.
Work anywhere, including Linux
Native desktop apps for Windows, macOS, and Linux, plus browser and mobile access, even offline.
Open-source code you can inspect
Every line of ONLYOFFICE Docs' core is listed on GitHub. Audit it, extend it, or self-host it - no closed black box.
AI on your terms
Connect OpenAI, Anthropic, DeepSeek, Gemini, or fully local models via Ollama and LM Studio, right inside the editor, not bolted on through a separate automation tool.
ONLYOFFICE vs Zoho Writer
| Feature |  ONLYOFFICE Docs |  Zoho Writer |
|---|---|---|
| Data ownership |  Full control (self-hosted or private cloud) | Zoho's cloud infrastructure only |
| Source code | Open-source, publicly auditable | Closed-source |
| File compatibility | Native OOXML (DOCX/XLSX/PPTX) | Generally good, but formatting can shift on complex files |
| PDF editing | Full-featured editor | Basic tools, no dedicated advanced PDF editor |
| AI options | Any provider, including local models, inside the editor | Zia only; third-party AI needs separate workflow tools |
| Deployment | Cloud, on-premise, or hybrid | Cloud only |
| Licensing | Subscription or perpetual on-premise license | Subscription only |
| Integrations | 50+ platforms, any ecosystem | Deepest value inside Zoho One |
From startups to governments and enterprises, millions of users trust ONLYOFFICE with their most important documents.
Built for your use case
For businesses
Run a secure, auditable document environment under your control. Ideal for regulated industries like finance, healthcare, and legal.
For developers
Embed powerful document editors under your brand on your own servers into your product with our API and SDK, backed by open-source code you can inspect.
For public sector & education
Meet data sovereignty and compliance requirements, with self-hosting and AI that can run entirely on-premises.
Get started in minutes
In the cloud(fastest way)
Start editing instantly with a ready-to-use environment.
Try it now for free
On your own server
Deploy ONLYOFFICE Docs in your infrastructure for full control and compliance.
Download and self-host