Threat Modeling Software
Alternatives to CAIRIS
CAIRIS combines secure-systems work with usability and requirements engineering. It stores assets, countermeasures, factoids, personas, requirements, and architectural components, then generates 12 views spanning people, risks, requirements, architecture, and physical location. As designs evolve, it can create threat models, use attack and architectural patterns to examine attack surface and security problems, and support potential GDPR compliance analysis. It also produces Volere requirement specifications and GDPR DPIA documents, while its API supports custom design applications and toolchain integration.
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Dethernety Dethernety suits security teams modeling architecture and DevOps teams automating threat-model work through the CLI.
Free plan Open source Web · API · Self-hosted8.7 Visit Specs - 02
ThreatModeler Nexus ThreatModeler Nexus is built for enterprise security, architecture, development, compliance, and risk teams working across large portfolios.
From $333.33/mo Free plan Web · API · Self-hosted8.0 Visit Specs - 03
AWS Threat Composer It suits people modeling system threats who want diagrams, linked mitigations, and portable model files.
Web · Windows · macOS · Linux7.9 Visit Specs - 04
CYMETRIS CYMETRIS Lite is described for freelance security engineers, consultancies, mobility and vehicle-development startups, automotive supply-chain security teams, and service providers running TARAs.
From €99/mo Web · API · Self-hosted7.9 Visit Specs - 05 OWASP Threat Dragon
Threat Dragon is intended for developers and defenders, including experienced threat modelers and beginners.
Free plan Web · Windows · macOS · Linux7.9 Visit Specs - 06
IriusRisk IriusRisk suits security teams, developers, CISOs, and compliance teams that need to model threats and align controls with standards.
Free plan Web · API · Self-hosted7.8 Visit Specs - 07 KAVACH
KAVACH is built for OEMs, Tier-1 suppliers, automotive cybersecurity teams, and programme engineers.
Windows7.7 Visit Specs - 08 ThreatTree
ThreatTree is intended for security teams ranging from solo consultants to CISO organizations.
From $29/mo Free plan Web · API7.7 Visit Specs - 09 pytm
pytm suits developers who want to define threat models in Python and generate diagrams, threats, and reports from them.
Free plan Windows · macOS · Linux7.6 Visit Specs - 10 Threagile
Threagile suits developers and teams doing threat modeling in agile projects or DevSecOps workflows.
Free plan Web · Linux · API · Self-hosted7.6 Visit Specs - 11 ThreatZ
ThreatZ is aimed at OEMs and Tier-1 suppliers coordinating vehicle cybersecurity and supply-chain evidence.
From $8.33/mo Free trial Web · API · Self-hosted7.6 Visit Specs - 12
DevArmor Web · API · Self-hosted · Browser extension7.5 Visit Specs - 13
EnCo SOX ATA It suits automotive, plant engineering, rail and aerospace teams performing traceable attack-path and risk analysis.
Web · Windows7.5 Visit Specs - 14 SD Elements From $6,250/mo Web · API · Self-hosted7.5 Visit Specs
- 15 ThreatForge
ThreatForge is positioned for developers and teams seeking threat modeling without an enterprise procurement cycle.
Free plan Web · Windows · macOS · Linux7.5 Visit Specs - 16
ThreatOpus ThreatOpus is aimed at security teams, security champions and platform engineers who want governed threat models and clear merge decisions.
From £129.99/mo Free trial Web · API7.5 Visit Specs - 17
AutoSec TARA Suite It suits automotive cybersecurity analysts handling concept-phase TARA, supplier reviews, UN R155 evidence preparation, architecture-change reassessment, or cybersecurity concept definition.
Web · Self-hosted7.4 Visit Specs - 18 ADTool
ADTool suits security analysts and researchers who need attack-defense tree modeling, quantitative analysis, or attack ranking.
7.3 Visit Specs - 19 itemis SECURE
itemis SECURE suits organizations conducting cybersecurity risk analysis, particularly in automotive and industrial settings.
Web · Windows7.2 Visit Specs - 20 TSpec 6.2 Visit Specs
- 21 Microsoft Threat Modeling Tool Windows5.6 Visit Specs
- 22 ThreatModeler CloudModeler Web5.5 Visit Specs
Choosing instead of CAIRIS
Alternatives make sense when your priority is a narrower threat-modeling workflow, developer automation, or a particular model format. CAIRIS is free, but deployment can involve Docker, Vagrant, or source installation; its browser application excludes Internet Explorer, and the live demo rebuilds nightly with databases visible to everyone. Compare whether you need CAIRIS's combined security, usability, and requirements scope or prefer diagram-focused analysis, code-defined models, pull-request checks, local files, graph analysis, or policy controls. Also weigh each product's platform coverage, integrations, collaboration approach, and any paid tier against CAIRIS's free availability.