head to head · open source
Tuta vs Phase
Tuta has 7,925 GitHub stars, 639 forks, 1,001 open issues and last shipped yesterday. Phase has 923 stars, 70 forks, 78 open issues and last shipped 2 days ago. Tuta leads on adoption by 759% (7,925 vs 923 stars). Tuta is written in TypeScript under GPL-3.0; Phase is written in TypeScript under a custom or non-standard licence. Tuta has attracted 8% as many forks as stars, Phase 8%. 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 | Phase | |
|---|---|---|
| GitHub stars | ★ 7.9K | ★ 923 |
| License | GPL-3.0 | Custom / other |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-19 | 2026-09-18 |
| Forks | ⑂ 639 | ⑂ 70 |
| 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 Phase if
- You want the Phase feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches TypeScript
- You evaluated both and Phase 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 Phase
Phase is an open source secrets management platform, written in TypeScript, that lets fast moving engineering teams secure, deploy, and manage application secrets and environment variables from development through to production.
read the full Phase overview →
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Frequently asked questions
Is Tuta or Phase more popular?
Tuta has 7,925 GitHub stars and Phase has 923. Tuta has the larger community by that measure.
Are Tuta and Phase free?
Both are open source. Tuta is licensed under GPL-3.0, and Phase has no licence declared in this registry. Both are free to self-host.
What is the difference between Tuta and Phase?
Tuta is written in TypeScript and Phase in TypeScript. 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 Phase?
Choose Tuta if you want the larger community (7,925 stars) or its GPL-3.0 licence terms. Choose Phase if its feature set, stack or Custom / other licence fits better. Both are self-hostable.