head to head · open source
Tuta vs certstrap
Tuta has 8,110 GitHub stars, 653 forks, 1,001 open issues and last shipped yesterday. certstrap has 2,462 stars, 212 forks, 32 open issues and last shipped 2 days ago. Tuta leads on adoption by 229% (8,110 vs 2,462 stars). Tuta is written in TypeScript under GPL-3.0; certstrap is written in Go under Apache-2.0. Tuta has attracted 8% as many forks as stars, certstrap 9%. Tuta 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
| Tuta | certstrap | |
|---|---|---|
| GitHub stars | ★ 8.1K | ★ 2.5K |
| License | GPL-3.0 | Apache-2.0 |
| Written in | TypeScript | Go |
| Last push | 2026-11-03 | 2026-11-02 |
| Forks | ⑂ 653 | ⑂ 212 |
| 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 certstrap if
- You want the certstrap feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and certstrap 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 certstrap
certstrap A simple certificate manager written in Go, to bootstrap your own certificate authority and public key infrastructure. Adapted from etcd ca. certstrap is a very convenient app if you don't feel like dealing with openssl, its myriad of options or config files. Common Uses certstrap allows you to build your own certificate system: 1. Initialize certificate authorities 2. Create identities and certificate signature requests for hosts 3. Sign and generate certificates Certificate architecture certstrap can init multiple certificate authorities to sign certificates with. Users can make arbitrarily long…
read the full certstrap overview →
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Frequently asked questions
Is Tuta or certstrap more popular?
Tuta has 8,110 GitHub stars and certstrap has 2,462. Tuta has the larger community by that measure.
Are Tuta and certstrap free?
Both are open source. Tuta is licensed under GPL-3.0 and certstrap under Apache-2.0. Neither carries a licence fee.
What is the difference between Tuta and certstrap?
Tuta is written in TypeScript and certstrap in Go. 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 certstrap?
Choose Tuta if you want the larger community (8,110 stars) or its GPL-3.0 licence terms. Choose certstrap if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.