Calligra Suite vs OnlyOffice Community Server
A side-by-side comparison of two self-hosted office suites options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Calligra Suite | OnlyOffice Community Server |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Category | Office Suites | Office Suites |
| License | GPL-2.0 | Apache-2.0 |
| Language | C++ | C# |
| Setup difficulty | Medium | Medium |
| Min. RAM | 512 MB | 4,096 MB |
| Deployment | bare-metal, source | docker, bare-metal |
| GitHub stars | ★ 300 | ★ 3,168 |
| First released | 2011 | 2014 |
| Replaces | Microsoft 365 | Microsoft 365 |
What are Calligra Suite and OnlyOffice Community Server?
Calligra Suite
Calligra Suite is an open-source office and graphics suite developed by the KDE community, including a word processor, spreadsheet, presentations, and project management tools. It can be deployed on self-managed Linux workstations.
- Word processing
- Spreadsheets
- Presentations
- Project planning
OnlyOffice Community Server
ONLYOFFICE Community Server is the collaboration backend that adds document management, mail, projects, and CRM around the ONLYOFFICE document editors. It can be self-hosted as an integrated office portal.
- Document management
- Built-in mail
- Projects and CRM
- Editor integration
Calligra Suite vs OnlyOffice Community Server: key differences
Calligra Suite is written in C++, while OnlyOffice Community Server is built with C#. Licensing differs — GPL-2.0 for Calligra Suite versus Apache-2.0 for OnlyOffice Community Server. Calligra Suite is the lighter option, starting around 512 MB of RAM against 4,096 MB for OnlyOffice Community Server. Calligra Suite is the more established project (first released 2011), while OnlyOffice Community Server arrived in 2014. OnlyOffice Community Server has the considerably larger community, at 3,168 GitHub stars versus 300. OnlyOffice Community Server lists first-class Docker deployment; Calligra Suite does not.
Why pick each one
Choose Calligra Suite if…
- Fully open source
- Integrates with KDE
Watch out for
- Smaller user base
- Desktop focused
Choose OnlyOffice Community Server if…
- Integrated office portal
- Open source core
Watch out for
- Heavy resource needs
- Setup complexity
Frequently asked questions
Is Calligra Suite or OnlyOffice Community Server better?
Neither is universally better. OnlyOffice Community Server has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Calligra Suite and OnlyOffice Community Server free and open-source?
Yes. Calligra Suite is licensed under GPL-2.0 and OnlyOffice Community Server under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Calligra Suite and OnlyOffice Community Server with Docker?
Calligra Suite: check the project docs for container support. OnlyOffice Community Server: yes.
Which is lighter on resources, Calligra Suite or OnlyOffice Community Server?
Calligra Suite has the smaller minimum footprint at 512 MB of RAM, compared to about 4,096 MB for OnlyOffice Community Server. Real-world usage depends on library size, user count, and enabled features.