head to head · open source
ONLYOFFICE Docs vs ZenConverter
ONLYOFFICE Docs has 7,081 GitHub stars, 1,327 forks, 1,135 open issues and last shipped 8 days ago. ZenConverter has 1,842 stars, 64 forks, 3 open issues and last shipped 3 days ago. ONLYOFFICE Docs leads on adoption by 284% (7,081 vs 1,842 stars). ONLYOFFICE Docs is written in Shell under AGPL-3.0; ZenConverter is written in Kotlin under AGPL-3.0. ONLYOFFICE Docs has attracted 19% as many forks as stars, ZenConverter 3%. ZenConverter 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 | ZenConverter | |
|---|---|---|
| GitHub stars | ★ 7.1K | ★ 1.8K |
| License | AGPL-3.0 | AGPL-3.0 |
| Written in | Shell | Kotlin |
| Last push | 2026-10-26 | 2026-10-31 |
| Forks | ⑂ 1.3K | ⑂ 64 |
| 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 ZenConverter if
- You want the ZenConverter feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Kotlin
- You evaluated both and ZenConverter 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 ZenConverter
ZenConverter Private, local first file conversion for Android. English 中文 ZenConverter is a local file converter for Android. Pick a file on your phone, convert it on your phone, and keep it off someone else's server. The app is built with native Kotlin and Jetpack Compose. File access goes through Android's Storage Access Framework, and longer jobs run in a foreground service. The app deliberately stays narrow: supported routes are verified on a physical Android device, and their known limits are written down instead of hidden. Note: very large media files still need adequate free storage, memory, and power…
read the full ZenConverter overview →
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Frequently asked questions
Is ONLYOFFICE Docs or ZenConverter more popular?
ONLYOFFICE Docs has 7,081 GitHub stars and ZenConverter has 1,842. ONLYOFFICE Docs has the larger community by that measure.
Are ONLYOFFICE Docs and ZenConverter free?
Both are open source. ONLYOFFICE Docs is licensed under AGPL-3.0 and ZenConverter under AGPL-3.0. Neither carries a licence fee.
What is the difference between ONLYOFFICE Docs and ZenConverter?
ONLYOFFICE Docs is written in Shell and ZenConverter in Kotlin. 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 ZenConverter?
Choose ONLYOFFICE Docs if you want the larger community (7,081 stars) or its AGPL-3.0 licence terms. Choose ZenConverter if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.