head to head · open source
Tuta vs Tongsuo
Tuta has 8,110 GitHub stars, 653 forks, 1,001 open issues and last shipped 2 days ago. Tongsuo has 1,552 stars, 265 forks, 160 open issues and last shipped 10 days ago. Tuta leads on adoption by 423% (8,110 vs 1,552 stars). Tuta is written in TypeScript under GPL-3.0; Tongsuo is written in C under Apache-2.0. Tuta has attracted 8% as many forks as stars, Tongsuo 17%. Tuta was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (security), so they are genuine substitutes rather than adjacent tools.
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
| Tuta | Tongsuo | |
|---|---|---|
| GitHub stars | ★ 8.1K | ★ 1.6K |
| License | GPL-3.0 | Apache-2.0 |
| Written in | TypeScript | C |
| Last push | 2026-11-03 | 2026-10-26 |
| Forks | ⑂ 653 | ⑂ 265 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Tuta if
- You weight community size — 8.1K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick Tongsuo if
- You want the Tongsuo feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches C
- You evaluated both and Tongsuo fits your workflow better
About Tuta
Tuta Mail makes encryption easy Tuta Mail is the secure email service with built in end to end encryption that enables you to communicate securely with anyone on all your devices. Forum for bug reports/feature requests: Roadmap: Issue and feature tracker: Please submit your feature requests via Reddit or via support mail. Web client • iOS App Store • Desktop Client Translating Tuta See TRANSLATING.md Building See BUILDING.md. Developing Tuta See HACKING.md. Contribution policy This project does not accept contributions or bug reports produced, in part or in full, with assistance of large language models…
About Tongsuo
OpenAtom 铜锁/Tongsuo ========================= [![tongsuo logo]][www.tongsuo.net] [![github actions ci badge]][github actions ci] ![GitHub Release][github release] [![GitHub Downloads (all assets, all releases)][github downloads]]( 铜锁/Tongsuo是一个提供现代密码学算法和安全通信协议的开源基础密码库，为存储、网络、密钥管理、隐私计算等诸多业务场景提供底层的密码学基础能力，实现数据在传输、使用、存储等过程中的私密性、完整性和可认证性，为数据生命周期中的隐私和安全提供保护能力。 铜锁获得了国家密码管理局商用密码检测中心颁发的商用密码产品认证证书，助力用户在国密改造、密评、等保等过程中，更加严谨地满足我国商用密码技术合规的要求。可在此处下载资质原始文件。 特性 ========================= 铜锁提供如下主要的功能特性： 技术合规能力 符合 GM/T 0028《密码模块安全技术要求》的"软件密码模块安全一级"资质 符合 GM/T 0005 2021《随机性检测规范》 零知识证明（ZKP） Bulletproofs range Bulletproofs R1CS 密码学算法…
read the full Tongsuo overview →
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Frequently asked questions
Is Tuta or Tongsuo more popular?
Tuta has 8,110 GitHub stars and Tongsuo has 1,552. Tuta has the larger community by that measure.
Are Tuta and Tongsuo free?
Both are open source. Tuta is licensed under GPL-3.0 and Tongsuo under Apache-2.0. Neither carries a licence fee.
What is the difference between Tuta and Tongsuo?
Tuta is written in TypeScript and Tongsuo in C. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Tuta or Tongsuo?
Choose Tuta if you want the larger community (8,110 stars) or its GPL-3.0 licence terms. Choose Tongsuo if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.