head to head · open source
CryptPad vs ZenConverter
CryptPad has 8,039 GitHub stars, 873 forks, 401 open issues and last shipped yesterday. ZenConverter has 1,842 stars, 64 forks, 3 open issues and last shipped 3 days ago. CryptPad leads on adoption by 336% (8,039 vs 1,842 stars). CryptPad is written in JavaScript under AGPL-3.0; ZenConverter is written in Kotlin under AGPL-3.0. CryptPad has attracted 11% as many forks as stars, ZenConverter 3%. CryptPad 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
| CryptPad | ZenConverter | |
|---|---|---|
| GitHub stars | ★ 8.0K | ★ 1.8K |
| License | AGPL-3.0 | AGPL-3.0 |
| Written in | JavaScript | Kotlin |
| Last push | 2026-11-02 | 2026-10-31 |
| Forks | ⑂ 873 | ⑂ 64 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick CryptPad if
- You weight community size — 8.0K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches JavaScript
- 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 CryptPad
CryptPad CryptPad is a collaboration suite that is end to end encrypted and open source. It is designed to facilitate collaboration by synchronizing changes to documents in real time. Since all the user data is encrypted, in the event of a breach, attackers have no way of accessing the stored content. Furthermore, if the administrators do not modify the code, they and the service also cannot access any information about the users' content. Installation For development Our developer guide provides instructions for setting up a local instance without HTTPS or our more advanced security features. For production…
read the full CryptPad 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 CryptPad or ZenConverter more popular?
CryptPad has 8,039 GitHub stars and ZenConverter has 1,842. CryptPad has the larger community by that measure.
Are CryptPad and ZenConverter free?
Both are open source. CryptPad is licensed under AGPL-3.0 and ZenConverter under AGPL-3.0. Neither carries a licence fee.
What is the difference between CryptPad and ZenConverter?
CryptPad is written in JavaScript 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, CryptPad or ZenConverter?
Choose CryptPad if you want the larger community (8,039 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.