head to head · open source
prowler vs UTMStack
prowler has 15,159 GitHub stars, 2,479 forks, 371 open issues and last shipped yesterday. UTMStack has 592 stars, 83 forks, 141 open issues and last shipped yesterday. prowler leads on adoption by 2,461% (15,159 vs 592 stars). prowler is written in Python under Apache-2.0; UTMStack is written in TypeScript under AGPL-3.0. prowler has attracted 16% as many forks as stars, UTMStack 14%. 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
| prowler | UTMStack | |
|---|---|---|
| GitHub stars | ★ 15K | ★ 592 |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 2.5K | ⑂ 83 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick prowler if
- You weight community size — 15K 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 prowler
Prowler is the Open Cloud Security Platform trusted by thousands to automate security and compliance in any cloud environment. With thousands of ready to use checks and compliance frameworks, Prowler delivers real time, customizable monitoring and seamless integrations, making cloud security simple, scalable, and cost effective for organizations of any size. The Agentic Cloud Defender Try Prowler Cloud Join our Prowler community! Description Prowler is the world’s most widely used Open Source Cloud Security Platform that automates security and compliance across any cloud environment . With thousands of ready to…
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About UTMStack
[!IMPORTANT] ⚠️ UPGRADE NOTIFICATION and UTMStack v10 End of Life Notice UTMStack v10 will be sunset on December 5, 2026. As of today, v10 is no longer receiving any new features and will only receive critical fixes until the sunset date. After December 5, 2026, v10 will no longer be supported. 👉 All users must upgrade to v11 as soon as possible using the upgrade package. Full guide here: UTMStack Enterprise ready SIEM and XDR powered by Real Time correlation and Threat Intelligence Introduction Welcome to the UTMStack open source project! UTMStack is a unified threat management platform that merges SIEM…
read the full UTMStack overview →
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Frequently asked questions
Is prowler or UTMStack more popular?
prowler has 15,159 GitHub stars and UTMStack has 592. prowler has the larger community by that measure.
Are prowler and UTMStack free?
Both are open source. prowler is licensed under Apache-2.0 and UTMStack under AGPL-3.0. Neither carries a licence fee.
What is the difference between prowler and UTMStack?
prowler 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, prowler or UTMStack?
Choose prowler if you want the larger community (15,159 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.