head to head · open source
CryptPad vs IronCalc
CryptPad has 8,039 GitHub stars, 873 forks, 401 open issues and last shipped yesterday. IronCalc has 4,246 stars, 217 forks, 256 open issues and last shipped yesterday. CryptPad leads on adoption by 89% (8,039 vs 4,246 stars). CryptPad is written in JavaScript under AGPL-3.0; IronCalc is written in Rust under Apache-2.0. CryptPad has attracted 11% as many forks as stars, IronCalc 5%. 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 | IronCalc | |
|---|---|---|
| GitHub stars | ★ 8.0K | ★ 4.2K |
| License | AGPL-3.0 | Apache-2.0 |
| Written in | JavaScript | Rust |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 873 | ⑂ 217 |
| 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 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 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 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 CryptPad or IronCalc more popular?
CryptPad has 8,039 GitHub stars and IronCalc has 4,246. CryptPad has the larger community by that measure.
Are CryptPad and IronCalc free?
Both are open source. CryptPad is licensed under AGPL-3.0 and IronCalc under Apache-2.0. Neither carries a licence fee.
What is the difference between CryptPad and IronCalc ?
CryptPad is written in JavaScript 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, CryptPad or IronCalc ?
Choose CryptPad if you want the larger community (8,039 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.