head to head · open source
prowler vs UTMStack
prowler has 14,838 GitHub stars, 2,392 forks, 371 open issues and last shipped yesterday. UTMStack has 582 stars, 76 forks, 141 open issues and last shipped yesterday. prowler leads on adoption by 2,449% (14,838 vs 582 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 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
| prowler | UTMStack | |
|---|---|---|
| GitHub stars | ★ 15K | ★ 582 |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Python | TypeScript |
| Last push | 2026-09-19 | 2026-09-19 |
| Forks | ⑂ 2.4K | ⑂ 76 |
| 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 an Apache 2.0, Python based open source cloud security platform that automates security and compliance assessments across AWS, Azure, and Google Cloud through thousands of ready to use checks, aimed at cloud security, compliance, and DevSecOps teams that need continuous posture management without a commercial licence.
read the full prowler 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 prowler or UTMStack more popular?
prowler has 14,838 GitHub stars and UTMStack has 582. 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 (14,838 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.