head to head · open source
Tuta vs Stoat
Tuta has 7,925 GitHub stars, 639 forks, 1,001 open issues and last shipped yesterday. Stoat has 3,336 stars, 388 forks, 139 open issues and last shipped today. Tuta leads on adoption by 138% (7,925 vs 3,336 stars). Tuta is written in TypeScript under GPL-3.0; Stoat is written in Rust under a custom or non-standard licence. Tuta has attracted 8% as many forks as stars, Stoat 12%. Stoat 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 | Stoat | |
|---|---|---|
| GitHub stars | ★ 7.9K | ★ 3.3K |
| License | GPL-3.0 | Custom / other |
| Written in | TypeScript | Rust |
| Last push | 2026-09-19 | 2026-09-20 |
| Forks | ⑂ 639 | ⑂ 388 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Tuta if
- You weight community size — 7.9K 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 Stoat if
- You want the Stoat feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches Rust
- You evaluated both and Stoat fits your workflow better
About Tuta
Tuta is an open source, end to end encrypted email, calendar and contacts service for individuals and teams who need private communication to work across every device they own.
About Stoat
Stoat is a Rust backend project that provides the services and libraries powering the Stoat group chat service. The repository is organized around core crates for configuration, database implementation, files, API models, permissions, presence, result types, and a coalesced crate.
read the full Stoat overview →
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Frequently asked questions
Is Tuta or Stoat more popular?
Tuta has 7,925 GitHub stars and Stoat has 3,336. Tuta has the larger community by that measure.
Are Tuta and Stoat free?
Both are open source. Tuta is licensed under GPL-3.0, and Stoat has no licence declared in this registry. Both are free to self-host.
What is the difference between Tuta and Stoat?
Tuta is written in TypeScript and Stoat 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, Tuta or Stoat?
Choose Tuta if you want the larger community (7,925 stars) or its GPL-3.0 licence terms. Choose Stoat if its feature set, stack or Custom / other licence fits better. Both are self-hostable.