The Best Threat Modeling Software in 2026
We researched threat modeling software through official vendor websites, including pricing pages, plan tables, and product documentation. Products are ranked on their core threat-modeling capabilities, value for money, and verified features for modeling systems, identifying attack paths, and prioritizing security threats during design.
Our top picks
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Top ranked
CAIRIS#1 of 249.4/10A broad open-source choice for teams connecting threats, requirements, architecture, and risk.
Free plan
-
Runner-up
IriusRisk#2 of 249.3/10A flexible threat-modeling platform with automation, integrations, and a useful free tier.
Free plan
-
Top-ranked free plan
ThreatModeler Nexus#3 of 249.2/10AI-assisted threat modeling with attack paths, risk prioritization, compliance, and CI/CD checks.
Free plan
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.
The full ranking 24 tools, best first
-
Best forTeams needing broad, open-source threat modeling
A broad open-source choice for teams connecting threats, requirements, architecture, and risk.
- Attack-path analysis
- Collaborative review
- Risk prioritization
9.4/10★★★★★Visit CAIRIS -
Best forOrganizations wanting integrations and automated modeling
A flexible threat-modeling platform with automation, integrations, and a useful free tier.
- Collaborative review
- Risk prioritization
- Templates and frameworks
9.3/10★★★★★Visit IriusRisk -
Best forCloud-native teams needing AI-assisted modeling
AI-assisted threat modeling with attack paths, risk prioritization, compliance, and CI/CD checks.
- Attack-path analysis
- Risk prioritization
- Templates and frameworks
9.2/10★★★★★Visit ThreatModeler -
Best forTeams wanting affordable workflow-integrated modeling
A workflow-integrated threat modeling platform with a capable free plan and broad CI/CD coverage.
- Attack-path analysis
- Collaborative review
- Risk prioritization
9.1/10★★★★★Visit ThreatOpus -
Best forAutomotive teams running ISO/SAE 21434 TARA
A focused TARA platform for automotive teams managing ISO/SAE 21434 risk.
- Attack-path analysis
- Collaborative review
- Risk prioritization
9.0/10★★★★☆Visit CYMETRIS -
Best forLifecycle teams needing configurable risk analysis
A configurable TARA workspace for lifecycle teams modeling threats, risks, and countermeasures.
- Attack-path analysis
- Collaborative review
- Risk prioritization
8.9/10★★★★☆Visit itemis SECURE -
Best forAutomotive programs needing traceable cybersecurity cases
A traceable threat-modeling workspace for automotive cybersecurity programs.
- Attack-path analysis
- Collaborative review
- Risk prioritization
8.8/10★★★★☆Visit KAVACH -
Best forMature teams using attack-tree workflows
A focused attack-tree workbench for structured threat analysis and engineering traceability.
- Attack-path analysis
- Collaborative review
- Risk prioritization
8.6/10★★★★☆Visit EnCo Software -
Best forLarge enterprises needing compliance automation
A broad enterprise platform for automated modeling, compliance mapping, and DevSecOps workflows.
- Collaborative review
- Risk prioritization
- Templates and frameworks
8.5/10★★★★☆Visit SD Elements -
Best forAutomotive enterprises needing full assurance workflows
A broad automotive threat modeling suite for enterprises managing assurance across complex programs.
- Attack-path analysis
- Collaborative review
- Risk prioritization
8.4/10★★★★☆Visit ThreatZ -
Best forCloud teams modeling infrastructure continuously
CloudModeler connects live cloud and IaC changes to prioritized risks and attack paths.
- Attack-path analysis
- Risk prioritization
- Templates and frameworks
8.3/10★★★★☆Visit CloudModeler -
Best forDevelopers wanting free structured threat modeling
A free, structured threat-modeling ecosystem for developers and version-controlled workflows.
- Templates and frameworks
8.2/10★★★★☆Visit site -
Best forFree teams using structured threat statements
A free, structured threat-modeling ecosystem with diagrams, exports, and AI tooling.
- Collaborative review
- Risk prioritization
- Templates and frameworks
8.1/10★★★★☆Try Threat Composer -
Best forSmall teams wanting collaborative free modeling
A capable free threat modeling workspace for small teams that need shared analysis.
- Attack-path analysis
- Collaborative review
- Risk prioritization
8.0/10★★★★☆Visit ThreatTree -
Best forTechnical teams needing graph-based attack analysis
A graph-based open-source threat modeling platform for technical security analysis.
- Attack-path analysis
- Collaborative review
- Risk prioritization
7.9/10★★★★☆Visit Dethernety -
Best forWindows users needing a free STRIDE tool
A free Windows STRIDE tool with diagrams, prioritization, templates, validation, and reports.
- Collaborative review
- Risk prioritization
- Templates and frameworks
7.8/10★★★★☆Visit Microsoft -
Best forFree open-source diagram-based modeling
A free, flexible choice for diagram-based threat modeling across web and desktop.
- Risk prioritization
- Templates and frameworks
7.7/10★★★★☆Visit site -
Best forTeams following structured STRIDE and TARA workflows
A structured automotive TARA suite with broad traceability and export coverage.
- Risk prioritization
7.6/10★★★★☆Visit AutoSec -
Best forResearchers needing free quantitative attack trees
A free, focused desktop tool for quantitative attack trees and attack ranking.
- Attack-path analysis
- Risk prioritization
7.5/10★★★★☆Visit ADTool -
Best forSmall teams wanting simple free STRIDE modeling
A free, visual STRIDE modeler for small teams that want version-controlled threat models.
- Templates and frameworks
7.4/10★★★★☆Visit ThreatForge -
Best forDevelopers who prefer code-defined threat models
A free, code-first framework for generating models, diagrams, reports, and findings.
- Risk prioritization
- Templates and frameworks
7.3/10★★★★☆Visit OWASP pytm -
Best forEngineers wanting code-based automated checks
A free YAML-driven toolkit for automated threat modeling and structured security reports.
- Templates and frameworks
7.2/10★★★★☆Visit Threagile -
Best forEnterprises enforcing security in development workflows
DevArmor connects threat modeling, developer workflows, and compliance evidence in one cloud platform.
7.1/10★★★★☆Visit DevArmor -
Best forTypeScript teams needing test automation
A focused open-source testing tool for TypeScript teams, not threat modeling.
6.0/10★★★☆☆Visit TSpec
No tools match those filters.
Compare at a glance
| # | Tool | Free plan | Paid from | Attack-path analysis | Risk prioritization | Deployment | Score |
|---|---|---|---|---|---|---|---|
| 1 | CAIRIS | Yes | Free | Yes | Yes | Both | 9.4 |
| 2 | IriusRisk | Yes | Yes | Both | 9.3 | ||
| 3 | ThreatModeler Nexus | Yes | Yes | Yes | Both | 9.2 | |
| 4 | ThreatOpus | Yes | £129.99/mo | Yes | Yes | Both | 9.1 |
| 5 | CYMETRIS | No | €99/mo | Yes | Yes | Both | 9.0 |
| 6 | itemis SECURE | Yes | Yes | Both | 8.9 | ||
| 7 | KAVACH | No | Yes | Yes | Both | 8.8 | |
| 8 | EnCo SOX ATA | Yes | Yes | 8.6 | |||
| 9 | SD Elements | No | Yes | Both | 8.5 | ||
| 10 | ThreatZ | No | $499/user/mo | Yes | Yes | Both | 8.4 |
| 11 | ThreatModeler CloudModeler | Yes | Yes | Cloud | 8.3 | ||
| 12 | AWS Threat Composer | Yes | Free | Both | 8.2 | ||
| 13 | Threat Composer | Yes | Free | Yes | Both | 8.1 | |
| 14 | ThreatTree | Yes | Yes | Yes | Cloud | 8.0 | |
| 15 | Dethernety | Free | Yes | Yes | Self_hosted | 7.9 | |
| 16 | Microsoft Threat Modeling Tool | Yes | Free | Yes | 7.8 | ||
| 17 | OWASP Threat Dragon | Yes | Free | Yes | Self_hosted | 7.7 | |
| 18 | AutoSec TARA Suite | No | Yes | Both | 7.6 | ||
| 19 | ADTool | Yes | Free | Yes | Yes | 7.5 | |
| 20 | ThreatForge | Yes | Free | Cloud | 7.4 | ||
| 21 | pytm | Free | Yes | Self_hosted | 7.3 | ||
| 22 | Threagile | Free | Both | 7.2 | |||
| 23 | DevArmor | No | Cloud | 7.1 | |||
| 24 | TSpec | Yes | Free | 6.0 |
Head-to-head All 28 comparisons →
- CAIRIS vs IriusRisk
- CAIRIS vs ThreatModeler Nexus
- CAIRIS vs ThreatOpus
- CAIRIS vs CYMETRIS
- CAIRIS vs itemis SECURE
- CAIRIS vs KAVACH
- CAIRIS vs EnCo SOX ATA
- IriusRisk vs ThreatModeler Nexus
- IriusRisk vs ThreatOpus
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How we rank threat modeling software
Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update