Threagile
Threagile: A free YAML-driven toolkit for automated threat modeling and structured security reports. Ranked #22 of 24 in Threat Modeling Software by our editors (7.2/10); pricing: Open source; best for engineers wanting code-based automated checks.
At a glance
- Editor score7.2 / 10
- PricingOpen source
- Best forEngineers wanting code-based automated checks
- Paid fromFree
- Facts checked22 Sep 2026
Where it wins
- YAML authoring with standard and custom security risk rules
- Generates diagrams, mitigation reports, and structured exports
- Supports IDEs, Docker, REST deployment, and a hosted playground
Where it doesn't
- Collaboration features are limited
- Risk prioritization and attack-path capabilities are limited
- No AI features
Our verdict on Threagile
Threagile is a free, open-source toolkit for modeling software architectures in YAML and analyzing them with security risk rules. It is aimed at developers and security teams that want threat modeling integrated into software delivery workflows, particularly engineers who prefer architecture and security checks to be represented as code. Models can be edited in an IDE, tracked in Git, and analyzed through command-line execution, Docker, a REST server, or the hosted playground.
Its strongest area is the connection between structured authoring and automated analysis. Teams can define architectures and data flows in YAML, apply standard or custom risk rules, and generate risk reports with mitigation advice and risk tracking. Threagile also produces data-flow and data-asset diagrams, while exports in PDF, Excel, JSON, and other structured formats make the results usable beyond the modeling environment. IDE support adds schema validation, autocompletion, and live templates, which fits teams that already manage technical work in code editors and version-controlled workflows.
The main trade-off is focus. Threagile provides the core mechanics for code-based threat modeling, but its collaboration, risk-prioritization, and attack-path capabilities are limited. It also does not provide AI features. Engineers and security teams that value YAML authoring, customizable rules, automated checks, and flexible deployment should find the toolkit a close fit. Teams looking for deeper collaborative review workflows, stronger prioritization features, or dedicated attack-path analysis should consider a broader alternative instead.
Your product? Our editors can test Threagile in depth and publish a review, labelled as paid · from $149/mo →
Threagile pricing
Threagile fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | Free |
| Project limit | Not verified |
| Attack-path analysis | Not verified |
| Risk prioritization | Not verified |
| Collaborative review | Not verified |
| Templates and frameworks | Yes |
| Modeling methods | Custom |
| Deployment | Both |
| Deployment | Cloud, Self-hosted |
| Platforms | Web |
| Support | Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Open source |
| Website | threagile.io |
| Facts checked | 22 Sep 2026 |
Alternatives to Threagile
- CAIRISA broad open-source choice for teams connecting threats, requirements, architecture, and risk.9.4
- IriusRiskA flexible threat-modeling platform with automation, integrations, and a useful free tier.9.3
- ThreatModeler NexusAI-assisted threat modeling with attack paths, risk prioritization, compliance, and CI/CD checks.9.2
See all Threagile alternatives →
Used Threagile? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Threagile for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
Threagile is listed in our Threat Modeling Software directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/threagile/"><img src="https://www.itechguides.com/best/badge/threagile.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update