head to head · open source
Fluxer vs Tuta
Fluxer has 10,318 GitHub stars, 760 forks, 111 open issues and last shipped today. Tuta has 7,925 stars, 639 forks, 1,001 open issues and last shipped yesterday. Fluxer leads on adoption by 30% (10,318 vs 7,925 stars). Fluxer is written in TypeScript under AGPL-3.0; Tuta is written in TypeScript under GPL-3.0. Fluxer has attracted 7% as many forks as stars, Tuta 8%. Fluxer 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
| Fluxer | Tuta | |
|---|---|---|
| GitHub stars | ★ 10K | ★ 7.9K |
| License | AGPL-3.0 | GPL-3.0 |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-20 | 2026-09-19 |
| Forks | ⑂ 760 | ⑂ 639 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Fluxer if
- You weight community size — 10K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick Tuta if
- You want the Tuta feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and Tuta fits your workflow better
About Fluxer
Fluxer is a free and open source instant messaging and VoIP chat application built for friends, groups, and communities. The project's tagline describes it as messaging with privacy and community focus, and the GitHub description repeats the same core purpose. The repository is written in TypeScript and is distributed under the AGPL 3.0 license.
read the full Fluxer overview →
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.
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Frequently asked questions
Is Fluxer or Tuta more popular?
Fluxer has 10,318 GitHub stars and Tuta has 7,925. Fluxer has the larger community by that measure.
Are Fluxer and Tuta free?
Both are open source. Fluxer is licensed under AGPL-3.0 and Tuta under GPL-3.0. Neither carries a licence fee.
What is the difference between Fluxer and Tuta?
Fluxer is written in TypeScript and Tuta 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, Fluxer or Tuta?
Choose Fluxer if you want the larger community (10,318 stars) or its AGPL-3.0 licence terms. Choose Tuta if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.