head to head · open source
ONLYOFFICE Docs vs ZenConverter
ONLYOFFICE Docs has 6,910 GitHub stars, 1,308 forks, 1,135 open issues and last shipped 2 months ago. ZenConverter has 1,403 stars, 48 forks, 3 open issues and last shipped 5 days ago. ONLYOFFICE Docs leads on adoption by 393% (6,910 vs 1,403 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 | ★ 6.9K | ★ 1.4K |
| License | AGPL-3.0 | AGPL-3.0 |
| Written in | Shell | Kotlin |
| Last push | 2026-07-22 | 2026-09-14 |
| Forks | ⑂ 1.3K | ⑂ 48 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ONLYOFFICE Docs if
- You weight community size — 6.9K 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
ONLYOFFICE Docs is a free collaborative online office suite of viewers and editors for text documents, spreadsheets, presentations, forms, PDFs and diagrams, intended for teams and organisations that need real time document collaboration either inside their own infrastructure or embedded in a third party file sharing platform.
read the full ONLYOFFICE Docs overview →
About ZenConverter
ZenConverter is a local first file converter for Android, written in Kotlin with Jetpack Compose, for people who want to convert video, audio, and image files on their own phone instead of uploading them to someone else's server.
read the full ZenConverter overview →
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Frequently asked questions
Is ONLYOFFICE Docs or ZenConverter more popular?
ONLYOFFICE Docs has 6,910 GitHub stars and ZenConverter has 1,403. 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 (6,910 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.