head to head · open source
attestix vs UTMStack
attestix has 722 GitHub stars, 83 forks, 21 open issues and last shipped 2 days ago. UTMStack has 584 stars, 76 forks, 141 open issues and last shipped today. attestix leads on adoption by 24% (722 vs 584 stars). attestix is written in Python under Apache-2.0; UTMStack is written in TypeScript under AGPL-3.0. attestix has attracted 11% 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. The two share 1 topic tag (compliance), so they are genuine substitutes rather than adjacent tools.
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
| attestix | UTMStack | |
|---|---|---|
| GitHub stars | ★ 722 | ★ 584 |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Python | TypeScript |
| Last push | 2026-09-27 | 2026-09-29 |
| Forks | ⑂ 83 | ⑂ 76 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick attestix if
- You weight community size — 722 stars and counting
- You want the Apache-2.0 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 attestix
Attestix is an open source attestation infrastructure for AI agents that provides DID based agent identity, W3C Verifiable Credentials, an EU AI Act compliance layer, delegation chains, and reputation scoring, and it is aimed at teams building or operating autonomous agents that need to prove identity and compliance to another agent, a regulator, or a downstream system.
read the full attestix 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 attestix or UTMStack more popular?
attestix has 722 GitHub stars and UTMStack has 584. attestix has the larger community by that measure.
Are attestix and UTMStack free?
Both are open source. attestix is licensed under Apache-2.0 and UTMStack under AGPL-3.0. Neither carries a licence fee.
What is the difference between attestix and UTMStack?
attestix 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, attestix or UTMStack?
Choose attestix if you want the larger community (722 stars) or its Apache-2.0 licence terms. Choose UTMStack if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.