ONLYOFFICE Docs, the secure, self-hosted alternative to Hancom Office
Edit, share, and collaborate on documents, spreadsheets, and presentations including your existing HWP and HWPX files with full control over your data.
Why teams look for a Hancom Office alternative
Hancom Office is deeply tied to Korea's public sector and its own HWP format but that comes with trade-offs. Even South Korea's government is moving away from the closed HWP format, replacing it with the more open HWPX for AI compatibility starting in 2026.
For organizations that want open formats, real self-hosting, and AI flexibility, those trade-offs matter.
Documents built around a proprietary format that's harder to share, archive, and process with modern AI tools
"Private cloud" options run on Hancom's own infrastructure (via AWS), not servers you control
Closed-source platform so there is no way to inspect the code
AI features are Hancom's own built-in assistant, not a choice of providers
Built primarily around Windows-first, Korean-market workflows
What you get with ONLYOFFICE
Highest Microsoft Office compatibility
Built around Office Open XML, so DOCX, XLSX, and PPTX files keep their formatting.
Open your existing HWP and HWPX files
ONLYOFFICE can open, edit, and convert HWP/HWPX documents to DOCX or PDF, so switching away from Hancom doesn't mean losing your files.
A full-featured PDF editor, built in
Edit, fill, and e-sign PDF forms without a separate app.
True self-hosting
Deploy ONLYOFFICE entirely on your own servers, not just a private instance on someone else's cloud.
Open-source code you can inspect
Every line of ONLYOFFICE Docs' code is listed on GitHub under AGPL v.3.
AI on your terms
Connect OpenAI, Anthropic, DeepSeek, Gemini, or fully local models via Ollama and LM Studio.
Work anywhere
Native apps for Windows, macOS, and Linux, plus mobile and browser access.
Work with your tools
50+ ready-made connectors, including SharePoint, Odoo, Nextcloud, ownCloud, Confluence, etc..
ONLYOFFICE vs Hancom Office
| Feature | ONLYOFFICE Docs | Hancom Office |
|---|---|---|
| File format | Native OOXML, plus opens/edits HWP & HWPX | Native HWP/HWPX; MS Office via conversion |
| Source code | Open-source, publicly auditable | Closed-source |
| Data ownership | True self-hosting, on your own servers | Cloud or private-cloud (Hancom/AWS infrastructure) |
| AI options | Any provider, including local/self-hosted models | Hancom's own built-in AI assistant |
| Cross-platform | Native Windows, macOS, Linux, mobile | Primarily Windows-first |
| Licensing | Subscription or perpetual on-premise license | Subscription (Hancom Docs) or licensed desktop suite |
| Open-source | Yes | No |
| Integrations | 50+ platforms | Primarily its own ecosystem |
ONLYOFFICE Docs
Hancom OfficeFrom 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 on your own infrastructure, not someone else's private cloud.
For developers
Embed a document editor into your product with our open API and SDK.
For public sector & education
Meet data sovereignty requirements with true self-hosting and on-premises AI.
Get started in minutes
In the cloud(fastest way)
Start editing instantly with a ready-to-use environment.
Try it now for freeOn your own server
Deploy ONLYOFFICE Docs in your infrastructure for full control and compliance.
Download and self-host
Learn more
Blog
How to open HWP and HWPX file
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Watch the presentation to see the difference between office suites
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