Best Threat Modeling Software in 2026
Updated
In short: ThreatOpus is ranked #1 of 22 as of 4 October 2026, ahead of CAIRIS and OWASP Threat Dragon. The best-ranked option with a free plan is CAIRIS. The lowest first paid tier on this page is ThreatZ at $8.33/mo.
Threat modeling tools help development and security teams structure reviews of risks in systems and software. Compare the listed modeling methods, templates and frameworks, and risk prioritization to see how each option supports the analysis your team needs. Attack-path analysis and collaborative review add ways to assess how threats are examined and discussed. Deployment, project limits, free-plan availability, and paid-from pricing can inform practical fit. The ranking opens with ThreatOpus, AWS Threat Composer, and CAIRIS, and also includes OWASP Threat Dragon and ThreatModeler Nexus among its early entries. Use the stated criteria to weigh both modeling capabilities and the conditions for adopting a tool.
22 threat modeling software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
Threat Modeling Software, ranked on how quickly a newcomer can get going. 6 of the 22 on this page can be tried for free.
- 1 ThreatOpusPaid from £129.99/mo
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 2 CAIRISFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 3 OWASP Threat DragonFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 4 ThreatModeler NexusPaid from $333.33/mo
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 5 ThreatTreePaid from $29/mo
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 6 AWS Threat Composer
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 7 IriusRiskFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 8 CYMETRISPaid from €99/mo
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 9 itemis SECURE
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 10 ThreatForge
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: yes
- 11 pytm
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: yes
- 12 ADTool
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 13 Dethernety
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 14 Microsoft Threat Modeling Tool
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 15 AutoSec TARA Suite
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 16 EnCo SOX ATA
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 17 SD Elements
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 18 Threagile
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 19 ThreatZPaid from $8.33/mo
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 20 KAVACH
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 21 DevArmor
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 22 TSpec
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which threat modeling software is ranked first on The Geeks Club?
ThreatOpus is ranked #1 of 22 with a score of 7.7. CAIRIS is second and OWASP Threat Dragon third.
How many of these have a free plan?
6 of the 22 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, ThreatZ has the lowest first paid tier we found: $8.33/mo.
How is this list ranked?
Ranked on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on. Paid placements never change a rank.