head to head · open source
Amphion vs UTMStack
Amphion has 10,303 GitHub stars, 851 forks, 174 open issues and last shipped 6 months ago. UTMStack has 582 stars, 76 forks, 141 open issues and last shipped yesterday. Amphion leads on adoption by 1,670% (10,303 vs 582 stars). Amphion is written in Python under MIT; UTMStack is written in TypeScript under AGPL-3.0. Amphion has attracted 8% as many forks as stars, UTMStack 13%. UTMStack 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
| Amphion | UTMStack | |
|---|---|---|
| GitHub stars | ★ 10K | ★ 582 |
| License | MIT | AGPL-3.0 |
| Written in | Python | TypeScript |
| Last push | 2026-03-25 | 2026-09-19 |
| Forks | ⑂ 851 | ⑂ 76 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Amphion if
- You weight community size — 10K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick UTMStack if
- You want the UTMStack feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and UTMStack fits your workflow better
About Amphion
Amphion is an MIT licensed Python toolkit for audio, music and speech generation that gives researchers and engineers a shared, reproducible base for tasks such as text to speech, singing voice synthesis, voice conversion and text to audio.
read the full Amphion overview →
About UTMStack
UTMStack is an open source, AGPL 3.0 unified threat management platform that merges SIEM and XDR into one system, built for security operations centre teams, incident responders and compliance owners who need real time log correlation, threat detection and audit evidence without handing their telemetry to a closed vendor.
read the full UTMStack overview →
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Frequently asked questions
Is Amphion or UTMStack more popular?
Amphion has 10,303 GitHub stars and UTMStack has 582. Amphion has the larger community by that measure.
Are Amphion and UTMStack free?
Both are open source. Amphion is licensed under MIT and UTMStack under AGPL-3.0. Neither carries a licence fee.
What is the difference between Amphion and UTMStack?
Amphion is written in Python and UTMStack 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, Amphion or UTMStack?
Choose Amphion if you want the larger community (10,303 stars) or its MIT licence terms. Choose UTMStack if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.