head to head · open source
ONLYOFFICE Docs vs IronCalc
ONLYOFFICE Docs has 7,081 GitHub stars, 1,327 forks, 1,135 open issues and last shipped 8 days ago. IronCalc has 4,246 stars, 217 forks, 256 open issues and last shipped yesterday. ONLYOFFICE Docs leads on adoption by 67% (7,081 vs 4,246 stars). ONLYOFFICE Docs is written in Shell under AGPL-3.0; IronCalc is written in Rust under Apache-2.0. ONLYOFFICE Docs has attracted 19% as many forks as stars, IronCalc 5%. IronCalc was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| ONLYOFFICE Docs | IronCalc | |
|---|---|---|
| GitHub stars | ★ 7.1K | ★ 4.2K |
| License | AGPL-3.0 | Apache-2.0 |
| Written in | Shell | Rust |
| Last push | 2026-10-26 | 2026-11-02 |
| Forks | ⑂ 1.3K | ⑂ 217 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ONLYOFFICE Docs if
- You weight community size — 7.1K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Shell
- You value the larger contributor base for long-term maintenance
pick IronCalc if
- You want the IronCalc feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and IronCalc fits your workflow better
About ONLYOFFICE Docs
Welcome to the ONLYOFFICE Docs repo! ONLYOFFICE Docs is a free collaborative online office suite comprising viewers and editors for texts, spreadsheets, presentations, forms, PDFs, and diagrams. It is fully compatible with Office Open XML formats (.docx, .xlsx, .pptx) and enables collaborative editing in real time. ONLYOFFICE Docs can be used as a part of ONLYOFFICE DocSpace and ONLYOFFICE Workspace, or with third party sync&share solutions (e.g. Odoo, Moodle, ownCloud, Seafile, etc.) to enable collaborative editing within their interface. ONLYOFFICE Docs is available in three tailored editions to suit your…
read the full ONLYOFFICE Docs overview →
About IronCalc
IronCalc [![MIT licensed][mit badge]][mit url] [![Apache 2.0 licensed][apache badge]][apache url] [![Build Status][actions badge]][actions url] [![Code coverage][codecov badge]][codecov url] [![docs badge]][docs url] [![Discord chat][discord badge]][discord url] [mit badge]: [mit url]: [apache badge]: [apache url]: [codecov badge]: [codecov url]: [actions badge]: [actions url]: [docs url]: [docs badge]: [discord badge]: [discord url]: IronCalc is a new, modern, work in progress spreadsheet engine and set of tools to work with spreadsheets in diverse settings. This repository contains the main engine and the xlsx…
read the full IronCalc overview →
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Frequently asked questions
Is ONLYOFFICE Docs or IronCalc more popular?
ONLYOFFICE Docs has 7,081 GitHub stars and IronCalc has 4,246. ONLYOFFICE Docs has the larger community by that measure.
Are ONLYOFFICE Docs and IronCalc free?
Both are open source. ONLYOFFICE Docs is licensed under AGPL-3.0 and IronCalc under Apache-2.0. Neither carries a licence fee.
What is the difference between ONLYOFFICE Docs and IronCalc ?
ONLYOFFICE Docs is written in Shell and IronCalc in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, ONLYOFFICE Docs or IronCalc ?
Choose ONLYOFFICE Docs if you want the larger community (7,081 stars) or its AGPL-3.0 licence terms. Choose IronCalc if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.