head to head · open source
tfsec vs UTMStack
tfsec has 7,038 GitHub stars, 558 forks, 18 open issues and last shipped 6 months ago. UTMStack has 582 stars, 76 forks, 141 open issues and last shipped yesterday. tfsec leads on adoption by 1,109% (7,038 vs 582 stars). tfsec is written in Go under MIT; UTMStack is written in TypeScript under AGPL-3.0. tfsec 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. 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
| tfsec | UTMStack | |
|---|---|---|
| GitHub stars | ★ 7.0K | ★ 582 |
| License | MIT | AGPL-3.0 |
| Written in | Go | TypeScript |
| Last push | 2026-03-25 | 2026-09-19 |
| Forks | ⑂ 558 | ⑂ 76 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick tfsec if
- You weight community size — 7.0K stars and counting
- You want the MIT license terms
- Your stack matches Go
- 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 tfsec
tfsec is a static analysis security scanner for Terraform code, written in Go and released under the MIT license. It lives in the infrastructure as code and DevSecOps ecosystem, alongside tools such as linters and CI scanners. The project is now part of Trivy, Aqua Security's broader open source security scanner, and its Terraform scanning engine forms the foundation of Trivy's IaC and misconfiguration scanning capabilities. The repository remains available, but engineering attention is directed at Trivy going forward.
read the full tfsec 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 tfsec or UTMStack more popular?
tfsec has 7,038 GitHub stars and UTMStack has 582. tfsec has the larger community by that measure.
Are tfsec and UTMStack free?
Both are open source. tfsec is licensed under MIT and UTMStack under AGPL-3.0. Neither carries a licence fee.
What is the difference between tfsec and UTMStack?
tfsec is written in Go 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, tfsec or UTMStack?
Choose tfsec if you want the larger community (7,038 stars) or its MIT licence terms. Choose UTMStack if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.